/*
- * linux/fs/ext3/inode.c
+ * linux/fs/ext4/inode.c
*
* Copyright (C) 1992, 1993, 1994, 1995
* Remy Card (card@masi.ibp.fr)
* 64-bit file support on 64-bit platforms by Jakub Jelinek
* (jj@sunsite.ms.mff.cuni.cz)
*
- * Assorted race fixes, rewrite of ext3_get_block() by Al Viro, 2000
+ * Assorted race fixes, rewrite of ext4_get_block() by Al Viro, 2000
*/
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/time.h>
-#include <linux/ext3_jbd.h>
-#include <linux/jbd.h>
+#include <linux/ext4_jbd2.h>
+#include <linux/jbd2.h>
#include <linux/smp_lock.h>
#include <linux/highuid.h>
#include <linux/pagemap.h>
#include "xattr.h"
#include "acl.h"
-static int ext3_writepage_trans_blocks(struct inode *inode);
-
/*
* Test whether an inode is a fast symlink.
*/
-static int ext3_inode_is_fast_symlink(struct inode *inode)
+static int ext4_inode_is_fast_symlink(struct inode *inode)
{
- int ea_blocks = EXT3_I(inode)->i_file_acl ?
+ int ea_blocks = EXT4_I(inode)->i_file_acl ?
(inode->i_sb->s_blocksize >> 9) : 0;
return (S_ISLNK(inode->i_mode) && inode->i_blocks - ea_blocks == 0);
}
/*
- * The ext3 forget function must perform a revoke if we are freeing data
+ * The ext4 forget function must perform a revoke if we are freeing data
* which has been journaled. Metadata (eg. indirect blocks) must be
* revoked in all cases.
*
* but there may still be a record of it in the journal, and that record
* still needs to be revoked.
*/
-int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode,
- struct buffer_head *bh, ext3_fsblk_t blocknr)
+int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
+ struct buffer_head *bh, ext4_fsblk_t blocknr)
{
int err;
* support it. Otherwise, only skip the revoke on un-journaled
* data blocks. */
- if (test_opt(inode->i_sb, DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA ||
- (!is_metadata && !ext3_should_journal_data(inode))) {
+ if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA ||
+ (!is_metadata && !ext4_should_journal_data(inode))) {
if (bh) {
- BUFFER_TRACE(bh, "call journal_forget");
- return ext3_journal_forget(handle, bh);
+ BUFFER_TRACE(bh, "call jbd2_journal_forget");
+ return ext4_journal_forget(handle, bh);
}
return 0;
}
/*
* data!=journal && (is_metadata || should_journal_data(inode))
*/
- BUFFER_TRACE(bh, "call ext3_journal_revoke");
- err = ext3_journal_revoke(handle, blocknr, bh);
+ BUFFER_TRACE(bh, "call ext4_journal_revoke");
+ err = ext4_journal_revoke(handle, blocknr, bh);
if (err)
- ext3_abort(inode->i_sb, __FUNCTION__,
+ ext4_abort(inode->i_sb, __FUNCTION__,
"error %d when attempting revoke", err);
BUFFER_TRACE(bh, "exit");
return err;
/* Give ourselves just enough room to cope with inodes in which
* i_blocks is corrupt: we've seen disk corruptions in the past
* which resulted in random data in an inode which looked enough
- * like a regular file for ext3 to try to delete it. Things
+ * like a regular file for ext4 to try to delete it. Things
* will go a bit crazy if that happens, but at least we should
* try not to panic the whole kernel. */
if (needed < 2)
/* But we need to bound the transaction so we don't overflow the
* journal. */
- if (needed > EXT3_MAX_TRANS_DATA)
- needed = EXT3_MAX_TRANS_DATA;
+ if (needed > EXT4_MAX_TRANS_DATA)
+ needed = EXT4_MAX_TRANS_DATA;
- return EXT3_DATA_TRANS_BLOCKS(inode->i_sb) + needed;
+ return EXT4_DATA_TRANS_BLOCKS(inode->i_sb) + needed;
}
/*
{
handle_t *result;
- result = ext3_journal_start(inode, blocks_for_truncate(inode));
+ result = ext4_journal_start(inode, blocks_for_truncate(inode));
if (!IS_ERR(result))
return result;
- ext3_std_error(inode->i_sb, PTR_ERR(result));
+ ext4_std_error(inode->i_sb, PTR_ERR(result));
return result;
}
*/
static int try_to_extend_transaction(handle_t *handle, struct inode *inode)
{
- if (handle->h_buffer_credits > EXT3_RESERVE_TRANS_BLOCKS)
+ if (handle->h_buffer_credits > EXT4_RESERVE_TRANS_BLOCKS)
return 0;
- if (!ext3_journal_extend(handle, blocks_for_truncate(inode)))
+ if (!ext4_journal_extend(handle, blocks_for_truncate(inode)))
return 0;
return 1;
}
* so before we call here everything must be consistently dirtied against
* this transaction.
*/
-static int ext3_journal_test_restart(handle_t *handle, struct inode *inode)
+static int ext4_journal_test_restart(handle_t *handle, struct inode *inode)
{
jbd_debug(2, "restarting handle %p\n", handle);
- return ext3_journal_restart(handle, blocks_for_truncate(inode));
+ return ext4_journal_restart(handle, blocks_for_truncate(inode));
}
/*
* Called at the last iput() if i_nlink is zero.
*/
-void ext3_delete_inode (struct inode * inode)
+void ext4_delete_inode (struct inode * inode)
{
handle_t *handle;
* make sure that the in-core orphan linked list is properly
* cleaned up.
*/
- ext3_orphan_del(NULL, inode);
+ ext4_orphan_del(NULL, inode);
goto no_delete;
}
handle->h_sync = 1;
inode->i_size = 0;
if (inode->i_blocks)
- ext3_truncate(inode);
+ ext4_truncate(inode);
/*
- * Kill off the orphan record which ext3_truncate created.
+ * Kill off the orphan record which ext4_truncate created.
* AKPM: I think this can be inside the above `if'.
- * Note that ext3_orphan_del() has to be able to cope with the
+ * Note that ext4_orphan_del() has to be able to cope with the
* deletion of a non-existent orphan - this is because we don't
- * know if ext3_truncate() actually created an orphan record.
+ * know if ext4_truncate() actually created an orphan record.
* (Well, we could do this if we need to, but heck - it works)
*/
- ext3_orphan_del(handle, inode);
- EXT3_I(inode)->i_dtime = get_seconds();
+ ext4_orphan_del(handle, inode);
+ EXT4_I(inode)->i_dtime = get_seconds();
/*
* One subtle ordering requirement: if anything has gone wrong
* having errors), but we can't free the inode if the mark_dirty
* fails.
*/
- if (ext3_mark_inode_dirty(handle, inode))
+ if (ext4_mark_inode_dirty(handle, inode))
/* If that failed, just do the required in-core inode clear. */
clear_inode(inode);
else
- ext3_free_inode(handle, inode);
- ext3_journal_stop(handle);
+ ext4_free_inode(handle, inode);
+ ext4_journal_stop(handle);
return;
no_delete:
clear_inode(inode); /* We must guarantee clearing of inode... */
}
/**
- * ext3_block_to_path - parse the block number into array of offsets
+ * ext4_block_to_path - parse the block number into array of offsets
* @inode: inode in question (we are only interested in its superblock)
* @i_block: block number to be parsed
* @offsets: array to store the offsets in
* @boundary: set this non-zero if the referred-to block is likely to be
* followed (on disk) by an indirect block.
*
- * To store the locations of file's data ext3 uses a data structure common
+ * To store the locations of file's data ext4 uses a data structure common
* for UNIX filesystems - tree of pointers anchored in the inode, with
* data blocks at leaves and indirect blocks in intermediate nodes.
* This function translates the block number into path in that tree -
* get there at all.
*/
-static int ext3_block_to_path(struct inode *inode,
+static int ext4_block_to_path(struct inode *inode,
long i_block, int offsets[4], int *boundary)
{
- int ptrs = EXT3_ADDR_PER_BLOCK(inode->i_sb);
- int ptrs_bits = EXT3_ADDR_PER_BLOCK_BITS(inode->i_sb);
- const long direct_blocks = EXT3_NDIR_BLOCKS,
+ int ptrs = EXT4_ADDR_PER_BLOCK(inode->i_sb);
+ int ptrs_bits = EXT4_ADDR_PER_BLOCK_BITS(inode->i_sb);
+ const long direct_blocks = EXT4_NDIR_BLOCKS,
indirect_blocks = ptrs,
double_blocks = (1 << (ptrs_bits * 2));
int n = 0;
int final = 0;
if (i_block < 0) {
- ext3_warning (inode->i_sb, "ext3_block_to_path", "block < 0");
+ ext4_warning (inode->i_sb, "ext4_block_to_path", "block < 0");
} else if (i_block < direct_blocks) {
offsets[n++] = i_block;
final = direct_blocks;
} else if ( (i_block -= direct_blocks) < indirect_blocks) {
- offsets[n++] = EXT3_IND_BLOCK;
+ offsets[n++] = EXT4_IND_BLOCK;
offsets[n++] = i_block;
final = ptrs;
} else if ((i_block -= indirect_blocks) < double_blocks) {
- offsets[n++] = EXT3_DIND_BLOCK;
+ offsets[n++] = EXT4_DIND_BLOCK;
offsets[n++] = i_block >> ptrs_bits;
offsets[n++] = i_block & (ptrs - 1);
final = ptrs;
} else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) {
- offsets[n++] = EXT3_TIND_BLOCK;
+ offsets[n++] = EXT4_TIND_BLOCK;
offsets[n++] = i_block >> (ptrs_bits * 2);
offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1);
offsets[n++] = i_block & (ptrs - 1);
final = ptrs;
} else {
- ext3_warning(inode->i_sb, "ext3_block_to_path", "block > big");
+ ext4_warning(inode->i_sb, "ext4_block_to_path", "block > big");
}
if (boundary)
*boundary = final - 1 - (i_block & (ptrs - 1));
}
/**
- * ext3_get_branch - read the chain of indirect blocks leading to data
+ * ext4_get_branch - read the chain of indirect blocks leading to data
* @inode: inode in question
* @depth: depth of the chain (1 - direct pointer, etc.)
* @offsets: offsets of pointers in inode/indirect blocks
* or when it reads all @depth-1 indirect blocks successfully and finds
* the whole chain, all way to the data (returns %NULL, *err == 0).
*/
-static Indirect *ext3_get_branch(struct inode *inode, int depth, int *offsets,
+static Indirect *ext4_get_branch(struct inode *inode, int depth, int *offsets,
Indirect chain[4], int *err)
{
struct super_block *sb = inode->i_sb;
*err = 0;
/* i_data is not going away, no lock needed */
- add_chain (chain, NULL, EXT3_I(inode)->i_data + *offsets);
+ add_chain (chain, NULL, EXT4_I(inode)->i_data + *offsets);
if (!p->key)
goto no_block;
while (--depth) {
}
/**
- * ext3_find_near - find a place for allocation with sufficient locality
+ * ext4_find_near - find a place for allocation with sufficient locality
* @inode: owner
* @ind: descriptor of indirect block.
*
*
* Caller must make sure that @ind is valid and will stay that way.
*/
-static ext3_fsblk_t ext3_find_near(struct inode *inode, Indirect *ind)
+static ext4_fsblk_t ext4_find_near(struct inode *inode, Indirect *ind)
{
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct ext4_inode_info *ei = EXT4_I(inode);
__le32 *start = ind->bh ? (__le32*) ind->bh->b_data : ei->i_data;
__le32 *p;
- ext3_fsblk_t bg_start;
- ext3_grpblk_t colour;
+ ext4_fsblk_t bg_start;
+ ext4_grpblk_t colour;
/* Try to find previous block */
for (p = ind->p - 1; p >= start; p--) {
* It is going to be referred to from the inode itself? OK, just put it
* into the same cylinder group then.
*/
- bg_start = ext3_group_first_block_no(inode->i_sb, ei->i_block_group);
+ bg_start = ext4_group_first_block_no(inode->i_sb, ei->i_block_group);
colour = (current->pid % 16) *
- (EXT3_BLOCKS_PER_GROUP(inode->i_sb) / 16);
+ (EXT4_BLOCKS_PER_GROUP(inode->i_sb) / 16);
return bg_start + colour;
}
/**
- * ext3_find_goal - find a prefered place for allocation.
+ * ext4_find_goal - find a prefered place for allocation.
* @inode: owner
* @block: block we want
* @chain: chain of indirect blocks
* stores it in *@goal and returns zero.
*/
-static ext3_fsblk_t ext3_find_goal(struct inode *inode, long block,
+static ext4_fsblk_t ext4_find_goal(struct inode *inode, long block,
Indirect chain[4], Indirect *partial)
{
- struct ext3_block_alloc_info *block_i;
+ struct ext4_block_alloc_info *block_i;
- block_i = EXT3_I(inode)->i_block_alloc_info;
+ block_i = EXT4_I(inode)->i_block_alloc_info;
/*
* try the heuristic for sequential allocation,
return block_i->last_alloc_physical_block + 1;
}
- return ext3_find_near(inode, partial);
+ return ext4_find_near(inode, partial);
}
/**
- * ext3_blks_to_allocate: Look up the block map and count the number
+ * ext4_blks_to_allocate: Look up the block map and count the number
* of direct blocks need to be allocated for the given branch.
*
* @branch: chain of indirect blocks
* return the total number of blocks to be allocate, including the
* direct and indirect blocks.
*/
-static int ext3_blks_to_allocate(Indirect *branch, int k, unsigned long blks,
+static int ext4_blks_to_allocate(Indirect *branch, int k, unsigned long blks,
int blocks_to_boundary)
{
unsigned long count = 0;
}
/**
- * ext3_alloc_blocks: multiple allocate blocks needed for a branch
+ * ext4_alloc_blocks: multiple allocate blocks needed for a branch
* @indirect_blks: the number of blocks need to allocate for indirect
* blocks
*
* @blks: on return it will store the total number of allocated
* direct blocks
*/
-static int ext3_alloc_blocks(handle_t *handle, struct inode *inode,
- ext3_fsblk_t goal, int indirect_blks, int blks,
- ext3_fsblk_t new_blocks[4], int *err)
+static int ext4_alloc_blocks(handle_t *handle, struct inode *inode,
+ ext4_fsblk_t goal, int indirect_blks, int blks,
+ ext4_fsblk_t new_blocks[4], int *err)
{
int target, i;
unsigned long count = 0;
int index = 0;
- ext3_fsblk_t current_block = 0;
+ ext4_fsblk_t current_block = 0;
int ret = 0;
/*
while (1) {
count = target;
/* allocating blocks for indirect blocks and direct blocks */
- current_block = ext3_new_blocks(handle,inode,goal,&count,err);
+ current_block = ext4_new_blocks(handle,inode,goal,&count,err);
if (*err)
goto failed_out;
return ret;
failed_out:
for (i = 0; i <index; i++)
- ext3_free_blocks(handle, inode, new_blocks[i], 1);
+ ext4_free_blocks(handle, inode, new_blocks[i], 1);
return ret;
}
/**
- * ext3_alloc_branch - allocate and set up a chain of blocks.
+ * ext4_alloc_branch - allocate and set up a chain of blocks.
* @inode: owner
* @indirect_blks: number of allocated indirect blocks
* @blks: number of allocated direct blocks
* links them into chain and (if we are synchronous) writes them to disk.
* In other words, it prepares a branch that can be spliced onto the
* inode. It stores the information about that chain in the branch[], in
- * the same format as ext3_get_branch() would do. We are calling it after
+ * the same format as ext4_get_branch() would do. We are calling it after
* we had read the existing part of chain and partial points to the last
* triple of that (one with zero ->key). Upon the exit we have the same
- * picture as after the successful ext3_get_block(), except that in one
+ * picture as after the successful ext4_get_block(), except that in one
* place chain is disconnected - *branch->p is still zero (we did not
* set the last link), but branch->key contains the number that should
* be placed into *branch->p to fill that gap.
*
* If allocation fails we free all blocks we've allocated (and forget
* their buffer_heads) and return the error value the from failed
- * ext3_alloc_block() (normally -ENOSPC). Otherwise we set the chain
+ * ext4_alloc_block() (normally -ENOSPC). Otherwise we set the chain
* as described above and return 0.
*/
-static int ext3_alloc_branch(handle_t *handle, struct inode *inode,
- int indirect_blks, int *blks, ext3_fsblk_t goal,
+static int ext4_alloc_branch(handle_t *handle, struct inode *inode,
+ int indirect_blks, int *blks, ext4_fsblk_t goal,
int *offsets, Indirect *branch)
{
int blocksize = inode->i_sb->s_blocksize;
int err = 0;
struct buffer_head *bh;
int num;
- ext3_fsblk_t new_blocks[4];
- ext3_fsblk_t current_block;
+ ext4_fsblk_t new_blocks[4];
+ ext4_fsblk_t current_block;
- num = ext3_alloc_blocks(handle, inode, goal, indirect_blks,
+ num = ext4_alloc_blocks(handle, inode, goal, indirect_blks,
*blks, new_blocks, &err);
if (err)
return err;
branch[n].bh = bh;
lock_buffer(bh);
BUFFER_TRACE(bh, "call get_create_access");
- err = ext3_journal_get_create_access(handle, bh);
+ err = ext4_journal_get_create_access(handle, bh);
if (err) {
unlock_buffer(bh);
brelse(bh);
set_buffer_uptodate(bh);
unlock_buffer(bh);
- BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
- err = ext3_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
+ err = ext4_journal_dirty_metadata(handle, bh);
if (err)
goto failed;
}
failed:
/* Allocation failed, free what we already allocated */
for (i = 1; i <= n ; i++) {
- BUFFER_TRACE(branch[i].bh, "call journal_forget");
- ext3_journal_forget(handle, branch[i].bh);
+ BUFFER_TRACE(branch[i].bh, "call jbd2_journal_forget");
+ ext4_journal_forget(handle, branch[i].bh);
}
for (i = 0; i <indirect_blks; i++)
- ext3_free_blocks(handle, inode, new_blocks[i], 1);
+ ext4_free_blocks(handle, inode, new_blocks[i], 1);
- ext3_free_blocks(handle, inode, new_blocks[i], num);
+ ext4_free_blocks(handle, inode, new_blocks[i], num);
return err;
}
/**
- * ext3_splice_branch - splice the allocated branch onto inode.
+ * ext4_splice_branch - splice the allocated branch onto inode.
* @inode: owner
* @block: (logical) number of block we are adding
* @chain: chain of indirect blocks (with a missing link - see
- * ext3_alloc_branch)
+ * ext4_alloc_branch)
* @where: location of missing link
* @num: number of indirect blocks we are adding
* @blks: number of direct blocks we are adding
* inode (->i_blocks, etc.). In case of success we end up with the full
* chain to new block and return 0.
*/
-static int ext3_splice_branch(handle_t *handle, struct inode *inode,
+static int ext4_splice_branch(handle_t *handle, struct inode *inode,
long block, Indirect *where, int num, int blks)
{
int i;
int err = 0;
- struct ext3_block_alloc_info *block_i;
- ext3_fsblk_t current_block;
+ struct ext4_block_alloc_info *block_i;
+ ext4_fsblk_t current_block;
- block_i = EXT3_I(inode)->i_block_alloc_info;
+ block_i = EXT4_I(inode)->i_block_alloc_info;
/*
* If we're splicing into a [td]indirect block (as opposed to the
* inode) then we need to get write access to the [td]indirect block
*/
if (where->bh) {
BUFFER_TRACE(where->bh, "get_write_access");
- err = ext3_journal_get_write_access(handle, where->bh);
+ err = ext4_journal_get_write_access(handle, where->bh);
if (err)
goto err_out;
}
/* We are done with atomic stuff, now do the rest of housekeeping */
inode->i_ctime = CURRENT_TIME_SEC;
- ext3_mark_inode_dirty(handle, inode);
+ ext4_mark_inode_dirty(handle, inode);
/* had we spliced it onto indirect block? */
if (where->bh) {
* onto an indirect block at the very end of the file (the
* file is growing) then we *will* alter the inode to reflect
* the new i_size. But that is not done here - it is done in
- * generic_commit_write->__mark_inode_dirty->ext3_dirty_inode.
+ * generic_commit_write->__mark_inode_dirty->ext4_dirty_inode.
*/
jbd_debug(5, "splicing indirect only\n");
- BUFFER_TRACE(where->bh, "call ext3_journal_dirty_metadata");
- err = ext3_journal_dirty_metadata(handle, where->bh);
+ BUFFER_TRACE(where->bh, "call ext4_journal_dirty_metadata");
+ err = ext4_journal_dirty_metadata(handle, where->bh);
if (err)
goto err_out;
} else {
err_out:
for (i = 1; i <= num; i++) {
- BUFFER_TRACE(where[i].bh, "call journal_forget");
- ext3_journal_forget(handle, where[i].bh);
- ext3_free_blocks(handle,inode,le32_to_cpu(where[i-1].key),1);
+ BUFFER_TRACE(where[i].bh, "call jbd2_journal_forget");
+ ext4_journal_forget(handle, where[i].bh);
+ ext4_free_blocks(handle,inode,le32_to_cpu(where[i-1].key),1);
}
- ext3_free_blocks(handle, inode, le32_to_cpu(where[num].key), blks);
+ ext4_free_blocks(handle, inode, le32_to_cpu(where[num].key), blks);
return err;
}
* return = 0, if plain lookup failed.
* return < 0, error case.
*/
-int ext3_get_blocks_handle(handle_t *handle, struct inode *inode,
+int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
sector_t iblock, unsigned long maxblocks,
struct buffer_head *bh_result,
int create, int extend_disksize)
int offsets[4];
Indirect chain[4];
Indirect *partial;
- ext3_fsblk_t goal;
+ ext4_fsblk_t goal;
int indirect_blks;
int blocks_to_boundary = 0;
int depth;
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct ext4_inode_info *ei = EXT4_I(inode);
int count = 0;
- ext3_fsblk_t first_block = 0;
+ ext4_fsblk_t first_block = 0;
+ J_ASSERT(!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL));
J_ASSERT(handle != NULL || create == 0);
- depth = ext3_block_to_path(inode,iblock,offsets,&blocks_to_boundary);
+ depth = ext4_block_to_path(inode,iblock,offsets,&blocks_to_boundary);
if (depth == 0)
goto out;
- partial = ext3_get_branch(inode, depth, offsets, chain, &err);
+ partial = ext4_get_branch(inode, depth, offsets, chain, &err);
/* Simplest case - block found, no allocation needed */
if (!partial) {
count++;
/*map more blocks*/
while (count < maxblocks && count <= blocks_to_boundary) {
- ext3_fsblk_t blk;
+ ext4_fsblk_t blk;
if (!verify_chain(chain, partial)) {
/*
/*
* If the indirect block is missing while we are reading
- * the chain(ext3_get_branch() returns -EAGAIN err), or
+ * the chain(ext4_get_branch() returns -EAGAIN err), or
* if the chain has been changed after we grab the semaphore,
* (either because another process truncated this branch, or
* another get_block allocated this branch) re-grab the chain to see if
brelse(partial->bh);
partial--;
}
- partial = ext3_get_branch(inode, depth, offsets, chain, &err);
+ partial = ext4_get_branch(inode, depth, offsets, chain, &err);
if (!partial) {
count++;
mutex_unlock(&ei->truncate_mutex);
* allocation info here if necessary
*/
if (S_ISREG(inode->i_mode) && (!ei->i_block_alloc_info))
- ext3_init_block_alloc_info(inode);
+ ext4_init_block_alloc_info(inode);
- goal = ext3_find_goal(inode, iblock, chain, partial);
+ goal = ext4_find_goal(inode, iblock, chain, partial);
/* the number of blocks need to allocate for [d,t]indirect blocks */
indirect_blks = (chain + depth) - partial - 1;
* Next look up the indirect map to count the totoal number of
* direct blocks to allocate for this branch.
*/
- count = ext3_blks_to_allocate(partial, indirect_blks,
+ count = ext4_blks_to_allocate(partial, indirect_blks,
maxblocks, blocks_to_boundary);
/*
- * Block out ext3_truncate while we alter the tree
+ * Block out ext4_truncate while we alter the tree
*/
- err = ext3_alloc_branch(handle, inode, indirect_blks, &count, goal,
+ err = ext4_alloc_branch(handle, inode, indirect_blks, &count, goal,
offsets + (partial - chain), partial);
/*
- * The ext3_splice_branch call will free and forget any buffers
+ * The ext4_splice_branch call will free and forget any buffers
* on the new chain if there is a failure, but that risks using
* up transaction credits, especially for bitmaps where the
* credits cannot be returned. Can we handle this somehow? We
* may need to return -EAGAIN upwards in the worst case. --sct
*/
if (!err)
- err = ext3_splice_branch(handle, inode, iblock,
+ err = ext4_splice_branch(handle, inode, iblock,
partial, indirect_blks, count);
/*
* i_disksize growing is protected by truncate_mutex. Don't forget to
* protect it if you're about to implement concurrent
- * ext3_get_block() -bzzz
+ * ext4_get_block() -bzzz
*/
if (!err && extend_disksize && inode->i_size > ei->i_disksize)
ei->i_disksize = inode->i_size;
return err;
}
-#define DIO_CREDITS (EXT3_RESERVE_TRANS_BLOCKS + 32)
+#define DIO_CREDITS (EXT4_RESERVE_TRANS_BLOCKS + 32)
-static int ext3_get_block(struct inode *inode, sector_t iblock,
+static int ext4_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
handle_t *handle = journal_current_handle();
* Huge direct-io writes can hold off commits for long
* periods of time. Let this commit run.
*/
- ext3_journal_stop(handle);
- handle = ext3_journal_start(inode, DIO_CREDITS);
+ ext4_journal_stop(handle);
+ handle = ext4_journal_start(inode, DIO_CREDITS);
if (IS_ERR(handle))
ret = PTR_ERR(handle);
goto get_block;
}
- if (handle->h_buffer_credits <= EXT3_RESERVE_TRANS_BLOCKS) {
+ if (handle->h_buffer_credits <= EXT4_RESERVE_TRANS_BLOCKS) {
/*
* Getting low on buffer credits...
*/
- ret = ext3_journal_extend(handle, DIO_CREDITS);
+ ret = ext4_journal_extend(handle, DIO_CREDITS);
if (ret > 0) {
/*
* Couldn't extend the transaction. Start a new one.
*/
- ret = ext3_journal_restart(handle, DIO_CREDITS);
+ ret = ext4_journal_restart(handle, DIO_CREDITS);
}
}
get_block:
if (ret == 0) {
- ret = ext3_get_blocks_handle(handle, inode, iblock,
+ ret = ext4_get_blocks_wrap(handle, inode, iblock,
max_blocks, bh_result, create, 0);
if (ret > 0) {
bh_result->b_size = (ret << inode->i_blkbits);
/*
* `handle' can be NULL if create is zero
*/
-struct buffer_head *ext3_getblk(handle_t *handle, struct inode *inode,
+struct buffer_head *ext4_getblk(handle_t *handle, struct inode *inode,
long block, int create, int *errp)
{
struct buffer_head dummy;
dummy.b_state = 0;
dummy.b_blocknr = -1000;
buffer_trace_init(&dummy.b_history);
- err = ext3_get_blocks_handle(handle, inode, block, 1,
+ err = ext4_get_blocks_wrap(handle, inode, block, 1,
&dummy, create, 1);
/*
- * ext3_get_blocks_handle() returns number of blocks
+ * ext4_get_blocks_handle() returns number of blocks
* mapped. 0 in case of a HOLE.
*/
if (err > 0) {
* Now that we do not always journal data, we should
* keep in mind whether this should always journal the
* new buffer as metadata. For now, regular file
- * writes use ext3_get_block instead, so it's not a
+ * writes use ext4_get_block instead, so it's not a
* problem.
*/
lock_buffer(bh);
BUFFER_TRACE(bh, "call get_create_access");
- fatal = ext3_journal_get_create_access(handle, bh);
+ fatal = ext4_journal_get_create_access(handle, bh);
if (!fatal && !buffer_uptodate(bh)) {
memset(bh->b_data,0,inode->i_sb->s_blocksize);
set_buffer_uptodate(bh);
}
unlock_buffer(bh);
- BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
- err = ext3_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
+ err = ext4_journal_dirty_metadata(handle, bh);
if (!fatal)
fatal = err;
} else {
return NULL;
}
-struct buffer_head *ext3_bread(handle_t *handle, struct inode *inode,
+struct buffer_head *ext4_bread(handle_t *handle, struct inode *inode,
int block, int create, int *err)
{
struct buffer_head * bh;
- bh = ext3_getblk(handle, inode, block, create, err);
+ bh = ext4_getblk(handle, inode, block, create, err);
if (!bh)
return bh;
if (buffer_uptodate(bh))
/*
* To preserve ordering, it is essential that the hole instantiation and
* the data write be encapsulated in a single transaction. We cannot
- * close off a transaction and start a new one between the ext3_get_block()
- * and the commit_write(). So doing the journal_start at the start of
+ * close off a transaction and start a new one between the ext4_get_block()
+ * and the commit_write(). So doing the jbd2_journal_start at the start of
* prepare_write() is the right place.
*
- * Also, this function can nest inside ext3_writepage() ->
- * block_write_full_page(). In that case, we *know* that ext3_writepage()
+ * Also, this function can nest inside ext4_writepage() ->
+ * block_write_full_page(). In that case, we *know* that ext4_writepage()
* has generated enough buffer credits to do the whole page. So we won't
* block on the journal in that case, which is good, because the caller may
* be PF_MEMALLOC.
*
- * By accident, ext3 can be reentered when a transaction is open via
+ * By accident, ext4 can be reentered when a transaction is open via
* quota file writes. If we were to commit the transaction while thus
* reentered, there can be a deadlock - we would be holding a quota
* lock, and the commit would never complete if another thread had a
* transaction open and was blocking on the quota lock - a ranking
* violation.
*
- * So what we do is to rely on the fact that journal_stop/journal_start
+ * So what we do is to rely on the fact that jbd2_journal_stop/journal_start
* will _not_ run commit under these circumstances because handle->h_ref
* is elevated. We'll still have enough credits for the tiny quotafile
* write.
{
if (!buffer_mapped(bh) || buffer_freed(bh))
return 0;
- return ext3_journal_get_write_access(handle, bh);
+ return ext4_journal_get_write_access(handle, bh);
+}
+
+/*
+ * The idea of this helper function is following:
+ * if prepare_write has allocated some blocks, but not all of them, the
+ * transaction must include the content of the newly allocated blocks.
+ * This content is expected to be set to zeroes by block_prepare_write().
+ * 2006/10/14 SAW
+ */
+static int ext4_prepare_failure(struct file *file, struct page *page,
+ unsigned from, unsigned to)
+{
+ struct address_space *mapping;
+ struct buffer_head *bh, *head, *next;
+ unsigned block_start, block_end;
+ unsigned blocksize;
+ int ret;
+ handle_t *handle = ext4_journal_current_handle();
+
+ mapping = page->mapping;
+ if (ext4_should_writeback_data(mapping->host)) {
+ /* optimization: no constraints about data */
+skip:
+ return ext4_journal_stop(handle);
+ }
+
+ head = page_buffers(page);
+ blocksize = head->b_size;
+ for ( bh = head, block_start = 0;
+ bh != head || !block_start;
+ block_start = block_end, bh = next)
+ {
+ next = bh->b_this_page;
+ block_end = block_start + blocksize;
+ if (block_end <= from)
+ continue;
+ if (block_start >= to) {
+ block_start = to;
+ break;
+ }
+ if (!buffer_mapped(bh))
+ /* prepare_write failed on this bh */
+ break;
+ if (ext4_should_journal_data(mapping->host)) {
+ ret = do_journal_get_write_access(handle, bh);
+ if (ret) {
+ ext4_journal_stop(handle);
+ return ret;
+ }
+ }
+ /*
+ * block_start here becomes the first block where the current iteration
+ * of prepare_write failed.
+ */
+ }
+ if (block_start <= from)
+ goto skip;
+
+ /* commit allocated and zeroed buffers */
+ return mapping->a_ops->commit_write(file, page, from, block_start);
}
-static int ext3_prepare_write(struct file *file, struct page *page,
+static int ext4_prepare_write(struct file *file, struct page *page,
unsigned from, unsigned to)
{
struct inode *inode = page->mapping->host;
- int ret, needed_blocks = ext3_writepage_trans_blocks(inode);
+ int ret, ret2;
+ int needed_blocks = ext4_writepage_trans_blocks(inode);
handle_t *handle;
int retries = 0;
retry:
- handle = ext3_journal_start(inode, needed_blocks);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- goto out;
- }
- if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
- ret = nobh_prepare_write(page, from, to, ext3_get_block);
+ handle = ext4_journal_start(inode, needed_blocks);
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+ if (test_opt(inode->i_sb, NOBH) && ext4_should_writeback_data(inode))
+ ret = nobh_prepare_write(page, from, to, ext4_get_block);
else
- ret = block_prepare_write(page, from, to, ext3_get_block);
+ ret = block_prepare_write(page, from, to, ext4_get_block);
if (ret)
- goto prepare_write_failed;
+ goto failure;
- if (ext3_should_journal_data(inode)) {
+ if (ext4_should_journal_data(inode)) {
ret = walk_page_buffers(handle, page_buffers(page),
from, to, NULL, do_journal_get_write_access);
+ if (ret)
+ /* fatal error, just put the handle and return */
+ ext4_journal_stop(handle);
}
-prepare_write_failed:
- if (ret)
- ext3_journal_stop(handle);
- if (ret == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries))
+ return ret;
+
+failure:
+ ret2 = ext4_prepare_failure(file, page, from, to);
+ if (ret2 < 0)
+ return ret2;
+ if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry;
-out:
+ /* retry number exceeded, or other error like -EDQUOT */
return ret;
}
-int ext3_journal_dirty_data(handle_t *handle, struct buffer_head *bh)
+int ext4_journal_dirty_data(handle_t *handle, struct buffer_head *bh)
{
- int err = journal_dirty_data(handle, bh);
+ int err = jbd2_journal_dirty_data(handle, bh);
if (err)
- ext3_journal_abort_handle(__FUNCTION__, __FUNCTION__,
+ ext4_journal_abort_handle(__FUNCTION__, __FUNCTION__,
bh, handle,err);
return err;
}
if (!buffer_mapped(bh) || buffer_freed(bh))
return 0;
set_buffer_uptodate(bh);
- return ext3_journal_dirty_metadata(handle, bh);
+ return ext4_journal_dirty_metadata(handle, bh);
}
/*
* We need to pick up the new inode size which generic_commit_write gave us
* `file' can be NULL - eg, when called from page_symlink().
*
- * ext3 never places buffers on inode->i_mapping->private_list. metadata
+ * ext4 never places buffers on inode->i_mapping->private_list. metadata
* buffers are managed internally.
*/
-static int ext3_ordered_commit_write(struct file *file, struct page *page,
+static int ext4_ordered_commit_write(struct file *file, struct page *page,
unsigned from, unsigned to)
{
- handle_t *handle = ext3_journal_current_handle();
+ handle_t *handle = ext4_journal_current_handle();
struct inode *inode = page->mapping->host;
int ret = 0, ret2;
ret = walk_page_buffers(handle, page_buffers(page),
- from, to, NULL, ext3_journal_dirty_data);
+ from, to, NULL, ext4_journal_dirty_data);
if (ret == 0) {
/*
loff_t new_i_size;
new_i_size = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
- if (new_i_size > EXT3_I(inode)->i_disksize)
- EXT3_I(inode)->i_disksize = new_i_size;
+ if (new_i_size > EXT4_I(inode)->i_disksize)
+ EXT4_I(inode)->i_disksize = new_i_size;
ret = generic_commit_write(file, page, from, to);
}
- ret2 = ext3_journal_stop(handle);
+ ret2 = ext4_journal_stop(handle);
if (!ret)
ret = ret2;
return ret;
}
-static int ext3_writeback_commit_write(struct file *file, struct page *page,
+static int ext4_writeback_commit_write(struct file *file, struct page *page,
unsigned from, unsigned to)
{
- handle_t *handle = ext3_journal_current_handle();
+ handle_t *handle = ext4_journal_current_handle();
struct inode *inode = page->mapping->host;
int ret = 0, ret2;
loff_t new_i_size;
new_i_size = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
- if (new_i_size > EXT3_I(inode)->i_disksize)
- EXT3_I(inode)->i_disksize = new_i_size;
+ if (new_i_size > EXT4_I(inode)->i_disksize)
+ EXT4_I(inode)->i_disksize = new_i_size;
- if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
+ if (test_opt(inode->i_sb, NOBH) && ext4_should_writeback_data(inode))
ret = nobh_commit_write(file, page, from, to);
else
ret = generic_commit_write(file, page, from, to);
- ret2 = ext3_journal_stop(handle);
+ ret2 = ext4_journal_stop(handle);
if (!ret)
ret = ret2;
return ret;
}
-static int ext3_journalled_commit_write(struct file *file,
+static int ext4_journalled_commit_write(struct file *file,
struct page *page, unsigned from, unsigned to)
{
- handle_t *handle = ext3_journal_current_handle();
+ handle_t *handle = ext4_journal_current_handle();
struct inode *inode = page->mapping->host;
int ret = 0, ret2;
int partial = 0;
SetPageUptodate(page);
if (pos > inode->i_size)
i_size_write(inode, pos);
- EXT3_I(inode)->i_state |= EXT3_STATE_JDATA;
- if (inode->i_size > EXT3_I(inode)->i_disksize) {
- EXT3_I(inode)->i_disksize = inode->i_size;
- ret2 = ext3_mark_inode_dirty(handle, inode);
+ EXT4_I(inode)->i_state |= EXT4_STATE_JDATA;
+ if (inode->i_size > EXT4_I(inode)->i_disksize) {
+ EXT4_I(inode)->i_disksize = inode->i_size;
+ ret2 = ext4_mark_inode_dirty(handle, inode);
if (!ret)
ret = ret2;
}
- ret2 = ext3_journal_stop(handle);
+ ret2 = ext4_journal_stop(handle);
if (!ret)
ret = ret2;
return ret;
* the swapper to find the on-disk block of a specific piece of data.
*
* Naturally, this is dangerous if the block concerned is still in the
- * journal. If somebody makes a swapfile on an ext3 data-journaling
+ * journal. If somebody makes a swapfile on an ext4 data-journaling
* filesystem and enables swap, then they may get a nasty shock when the
* data getting swapped to that swapfile suddenly gets overwritten by
* the original zero's written out previously to the journal and
* So, if we see any bmap calls here on a modified, data-journaled file,
* take extra steps to flush any blocks which might be in the cache.
*/
-static sector_t ext3_bmap(struct address_space *mapping, sector_t block)
+static sector_t ext4_bmap(struct address_space *mapping, sector_t block)
{
struct inode *inode = mapping->host;
journal_t *journal;
int err;
- if (EXT3_I(inode)->i_state & EXT3_STATE_JDATA) {
+ if (EXT4_I(inode)->i_state & EXT4_STATE_JDATA) {
/*
* This is a REALLY heavyweight approach, but the use of
* bmap on dirty files is expected to be extremely rare:
* in trouble if mortal users could trigger this path at
* will.)
*
- * NB. EXT3_STATE_JDATA is not set on files other than
+ * NB. EXT4_STATE_JDATA is not set on files other than
* regular files. If somebody wants to bmap a directory
* or symlink and gets confused because the buffer
* hasn't yet been flushed to disk, they deserve
* everything they get.
*/
- EXT3_I(inode)->i_state &= ~EXT3_STATE_JDATA;
- journal = EXT3_JOURNAL(inode);
- journal_lock_updates(journal);
- err = journal_flush(journal);
- journal_unlock_updates(journal);
+ EXT4_I(inode)->i_state &= ~EXT4_STATE_JDATA;
+ journal = EXT4_JOURNAL(inode);
+ jbd2_journal_lock_updates(journal);
+ err = jbd2_journal_flush(journal);
+ jbd2_journal_unlock_updates(journal);
if (err)
return 0;
}
- return generic_block_bmap(mapping,block,ext3_get_block);
+ return generic_block_bmap(mapping,block,ext4_get_block);
}
static int bget_one(handle_t *handle, struct buffer_head *bh)
return 0;
}
-static int journal_dirty_data_fn(handle_t *handle, struct buffer_head *bh)
+static int jbd2_journal_dirty_data_fn(handle_t *handle, struct buffer_head *bh)
{
if (buffer_mapped(bh))
- return ext3_journal_dirty_data(handle, bh);
+ return ext4_journal_dirty_data(handle, bh);
return 0;
}
/*
* Note that we always start a transaction even if we're not journalling
* data. This is to preserve ordering: any hole instantiation within
- * __block_write_full_page -> ext3_get_block() should be journalled
+ * __block_write_full_page -> ext4_get_block() should be journalled
* along with the data so we don't crash and then get metadata which
* refers to old data.
*
*
* Problem:
*
- * ext3_writepage() -> kmalloc() -> __alloc_pages() -> page_launder() ->
- * ext3_writepage()
+ * ext4_writepage() -> kmalloc() -> __alloc_pages() -> page_launder() ->
+ * ext4_writepage()
*
* Similar for:
*
- * ext3_file_write() -> generic_file_write() -> __alloc_pages() -> ...
+ * ext4_file_write() -> generic_file_write() -> __alloc_pages() -> ...
*
- * Same applies to ext3_get_block(). We will deadlock on various things like
+ * Same applies to ext4_get_block(). We will deadlock on various things like
* lock_journal and i_truncate_mutex.
*
* Setting PF_MEMALLOC here doesn't work - too many internal memory
* AKPM2: if all the page's buffers are mapped to disk and !data=journal,
* we don't need to open a transaction here.
*/
-static int ext3_ordered_writepage(struct page *page,
+static int ext4_ordered_writepage(struct page *page,
struct writeback_control *wbc)
{
struct inode *inode = page->mapping->host;
* We give up here if we're reentered, because it might be for a
* different filesystem.
*/
- if (ext3_journal_current_handle())
+ if (ext4_journal_current_handle())
goto out_fail;
- handle = ext3_journal_start(inode, ext3_writepage_trans_blocks(inode));
+ handle = ext4_journal_start(inode, ext4_writepage_trans_blocks(inode));
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
walk_page_buffers(handle, page_bufs, 0,
PAGE_CACHE_SIZE, NULL, bget_one);
- ret = block_write_full_page(page, ext3_get_block, wbc);
+ ret = block_write_full_page(page, ext4_get_block, wbc);
/*
* The page can become unlocked at any point now, and
*/
if (ret == 0) {
err = walk_page_buffers(handle, page_bufs, 0, PAGE_CACHE_SIZE,
- NULL, journal_dirty_data_fn);
+ NULL, jbd2_journal_dirty_data_fn);
if (!ret)
ret = err;
}
walk_page_buffers(handle, page_bufs, 0,
PAGE_CACHE_SIZE, NULL, bput_one);
- err = ext3_journal_stop(handle);
+ err = ext4_journal_stop(handle);
if (!ret)
ret = err;
return ret;
return ret;
}
-static int ext3_writeback_writepage(struct page *page,
+static int ext4_writeback_writepage(struct page *page,
struct writeback_control *wbc)
{
struct inode *inode = page->mapping->host;
int ret = 0;
int err;
- if (ext3_journal_current_handle())
+ if (ext4_journal_current_handle())
goto out_fail;
- handle = ext3_journal_start(inode, ext3_writepage_trans_blocks(inode));
+ handle = ext4_journal_start(inode, ext4_writepage_trans_blocks(inode));
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
goto out_fail;
}
- if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
- ret = nobh_writepage(page, ext3_get_block, wbc);
+ if (test_opt(inode->i_sb, NOBH) && ext4_should_writeback_data(inode))
+ ret = nobh_writepage(page, ext4_get_block, wbc);
else
- ret = block_write_full_page(page, ext3_get_block, wbc);
+ ret = block_write_full_page(page, ext4_get_block, wbc);
- err = ext3_journal_stop(handle);
+ err = ext4_journal_stop(handle);
if (!ret)
ret = err;
return ret;
return ret;
}
-static int ext3_journalled_writepage(struct page *page,
+static int ext4_journalled_writepage(struct page *page,
struct writeback_control *wbc)
{
struct inode *inode = page->mapping->host;
int ret = 0;
int err;
- if (ext3_journal_current_handle())
+ if (ext4_journal_current_handle())
goto no_write;
- handle = ext3_journal_start(inode, ext3_writepage_trans_blocks(inode));
+ handle = ext4_journal_start(inode, ext4_writepage_trans_blocks(inode));
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
goto no_write;
*/
ClearPageChecked(page);
ret = block_prepare_write(page, 0, PAGE_CACHE_SIZE,
- ext3_get_block);
+ ext4_get_block);
if (ret != 0) {
- ext3_journal_stop(handle);
+ ext4_journal_stop(handle);
goto out_unlock;
}
ret = walk_page_buffers(handle, page_buffers(page), 0,
PAGE_CACHE_SIZE, NULL, commit_write_fn);
if (ret == 0)
ret = err;
- EXT3_I(inode)->i_state |= EXT3_STATE_JDATA;
+ EXT4_I(inode)->i_state |= EXT4_STATE_JDATA;
unlock_page(page);
} else {
/*
* really know unless we go poke around in the buffer_heads.
* But block_write_full_page will do the right thing.
*/
- ret = block_write_full_page(page, ext3_get_block, wbc);
+ ret = block_write_full_page(page, ext4_get_block, wbc);
}
- err = ext3_journal_stop(handle);
+ err = ext4_journal_stop(handle);
if (!ret)
ret = err;
out:
goto out;
}
-static int ext3_readpage(struct file *file, struct page *page)
+static int ext4_readpage(struct file *file, struct page *page)
{
- return mpage_readpage(page, ext3_get_block);
+ return mpage_readpage(page, ext4_get_block);
}
static int
-ext3_readpages(struct file *file, struct address_space *mapping,
+ext4_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
{
- return mpage_readpages(mapping, pages, nr_pages, ext3_get_block);
+ return mpage_readpages(mapping, pages, nr_pages, ext4_get_block);
}
-static void ext3_invalidatepage(struct page *page, unsigned long offset)
+static void ext4_invalidatepage(struct page *page, unsigned long offset)
{
- journal_t *journal = EXT3_JOURNAL(page->mapping->host);
+ journal_t *journal = EXT4_JOURNAL(page->mapping->host);
/*
* If it's a full truncate we just forget about the pending dirtying
if (offset == 0)
ClearPageChecked(page);
- journal_invalidatepage(journal, page, offset);
+ jbd2_journal_invalidatepage(journal, page, offset);
}
-static int ext3_releasepage(struct page *page, gfp_t wait)
+static int ext4_releasepage(struct page *page, gfp_t wait)
{
- journal_t *journal = EXT3_JOURNAL(page->mapping->host);
+ journal_t *journal = EXT4_JOURNAL(page->mapping->host);
WARN_ON(PageChecked(page));
if (!page_has_buffers(page))
return 0;
- return journal_try_to_free_buffers(journal, page, wait);
+ return jbd2_journal_try_to_free_buffers(journal, page, wait);
}
/*
* If the O_DIRECT write is intantiating holes inside i_size and the machine
* crashes then stale disk data _may_ be exposed inside the file.
*/
-static ssize_t ext3_direct_IO(int rw, struct kiocb *iocb,
+static ssize_t ext4_direct_IO(int rw, struct kiocb *iocb,
const struct iovec *iov, loff_t offset,
unsigned long nr_segs)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct ext4_inode_info *ei = EXT4_I(inode);
handle_t *handle = NULL;
ssize_t ret;
int orphan = 0;
if (rw == WRITE) {
loff_t final_size = offset + count;
- handle = ext3_journal_start(inode, DIO_CREDITS);
+ handle = ext4_journal_start(inode, DIO_CREDITS);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
goto out;
}
if (final_size > inode->i_size) {
- ret = ext3_orphan_add(handle, inode);
+ ret = ext4_orphan_add(handle, inode);
if (ret)
goto out_stop;
orphan = 1;
ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs,
- ext3_get_block, NULL);
+ ext4_get_block, NULL);
/*
- * Reacquire the handle: ext3_get_block() can restart the transaction
+ * Reacquire the handle: ext4_get_block() can restart the transaction
*/
handle = journal_current_handle();
int err;
if (orphan && inode->i_nlink)
- ext3_orphan_del(handle, inode);
+ ext4_orphan_del(handle, inode);
if (orphan && ret > 0) {
loff_t end = offset + ret;
if (end > inode->i_size) {
* We're going to return a positive `ret'
* here due to non-zero-length I/O, so there's
* no way of reporting error returns from
- * ext3_mark_inode_dirty() to userspace. So
+ * ext4_mark_inode_dirty() to userspace. So
* ignore it.
*/
- ext3_mark_inode_dirty(handle, inode);
+ ext4_mark_inode_dirty(handle, inode);
}
}
- err = ext3_journal_stop(handle);
+ err = ext4_journal_stop(handle);
if (ret == 0)
ret = err;
}
}
/*
- * Pages can be marked dirty completely asynchronously from ext3's journalling
+ * Pages can be marked dirty completely asynchronously from ext4's journalling
* activity. By filemap_sync_pte(), try_to_unmap_one(), etc. We cannot do
* much here because ->set_page_dirty is called under VFS locks. The page is
* not necessarily locked.
* So what we do is to mark the page "pending dirty" and next time writepage
* is called, propagate that into the buffers appropriately.
*/
-static int ext3_journalled_set_page_dirty(struct page *page)
+static int ext4_journalled_set_page_dirty(struct page *page)
{
SetPageChecked(page);
return __set_page_dirty_nobuffers(page);
}
-static const struct address_space_operations ext3_ordered_aops = {
- .readpage = ext3_readpage,
- .readpages = ext3_readpages,
- .writepage = ext3_ordered_writepage,
+static const struct address_space_operations ext4_ordered_aops = {
+ .readpage = ext4_readpage,
+ .readpages = ext4_readpages,
+ .writepage = ext4_ordered_writepage,
.sync_page = block_sync_page,
- .prepare_write = ext3_prepare_write,
- .commit_write = ext3_ordered_commit_write,
- .bmap = ext3_bmap,
- .invalidatepage = ext3_invalidatepage,
- .releasepage = ext3_releasepage,
- .direct_IO = ext3_direct_IO,
+ .prepare_write = ext4_prepare_write,
+ .commit_write = ext4_ordered_commit_write,
+ .bmap = ext4_bmap,
+ .invalidatepage = ext4_invalidatepage,
+ .releasepage = ext4_releasepage,
+ .direct_IO = ext4_direct_IO,
.migratepage = buffer_migrate_page,
};
-static const struct address_space_operations ext3_writeback_aops = {
- .readpage = ext3_readpage,
- .readpages = ext3_readpages,
- .writepage = ext3_writeback_writepage,
+static const struct address_space_operations ext4_writeback_aops = {
+ .readpage = ext4_readpage,
+ .readpages = ext4_readpages,
+ .writepage = ext4_writeback_writepage,
.sync_page = block_sync_page,
- .prepare_write = ext3_prepare_write,
- .commit_write = ext3_writeback_commit_write,
- .bmap = ext3_bmap,
- .invalidatepage = ext3_invalidatepage,
- .releasepage = ext3_releasepage,
- .direct_IO = ext3_direct_IO,
+ .prepare_write = ext4_prepare_write,
+ .commit_write = ext4_writeback_commit_write,
+ .bmap = ext4_bmap,
+ .invalidatepage = ext4_invalidatepage,
+ .releasepage = ext4_releasepage,
+ .direct_IO = ext4_direct_IO,
.migratepage = buffer_migrate_page,
};
-static const struct address_space_operations ext3_journalled_aops = {
- .readpage = ext3_readpage,
- .readpages = ext3_readpages,
- .writepage = ext3_journalled_writepage,
+static const struct address_space_operations ext4_journalled_aops = {
+ .readpage = ext4_readpage,
+ .readpages = ext4_readpages,
+ .writepage = ext4_journalled_writepage,
.sync_page = block_sync_page,
- .prepare_write = ext3_prepare_write,
- .commit_write = ext3_journalled_commit_write,
- .set_page_dirty = ext3_journalled_set_page_dirty,
- .bmap = ext3_bmap,
- .invalidatepage = ext3_invalidatepage,
- .releasepage = ext3_releasepage,
+ .prepare_write = ext4_prepare_write,
+ .commit_write = ext4_journalled_commit_write,
+ .set_page_dirty = ext4_journalled_set_page_dirty,
+ .bmap = ext4_bmap,
+ .invalidatepage = ext4_invalidatepage,
+ .releasepage = ext4_releasepage,
};
-void ext3_set_aops(struct inode *inode)
+void ext4_set_aops(struct inode *inode)
{
- if (ext3_should_order_data(inode))
- inode->i_mapping->a_ops = &ext3_ordered_aops;
- else if (ext3_should_writeback_data(inode))
- inode->i_mapping->a_ops = &ext3_writeback_aops;
+ if (ext4_should_order_data(inode))
+ inode->i_mapping->a_ops = &ext4_ordered_aops;
+ else if (ext4_should_writeback_data(inode))
+ inode->i_mapping->a_ops = &ext4_writeback_aops;
else
- inode->i_mapping->a_ops = &ext3_journalled_aops;
+ inode->i_mapping->a_ops = &ext4_journalled_aops;
}
/*
- * ext3_block_truncate_page() zeroes out a mapping from file offset `from'
+ * ext4_block_truncate_page() zeroes out a mapping from file offset `from'
* up to the end of the block which corresponds to `from'.
* This required during truncate. We need to physically zero the tail end
* of that block so it doesn't yield old data if the file is later grown.
*/
-static int ext3_block_truncate_page(handle_t *handle, struct page *page,
+int ext4_block_truncate_page(handle_t *handle, struct page *page,
struct address_space *mapping, loff_t from)
{
- ext3_fsblk_t index = from >> PAGE_CACHE_SHIFT;
+ ext4_fsblk_t index = from >> PAGE_CACHE_SHIFT;
unsigned offset = from & (PAGE_CACHE_SIZE-1);
unsigned blocksize, iblock, length, pos;
struct inode *inode = mapping->host;
* read-in the page - otherwise we create buffers to do the IO.
*/
if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) &&
- ext3_should_writeback_data(inode) && PageUptodate(page)) {
+ ext4_should_writeback_data(inode) && PageUptodate(page)) {
kaddr = kmap_atomic(page, KM_USER0);
memset(kaddr + offset, 0, length);
flush_dcache_page(page);
if (!buffer_mapped(bh)) {
BUFFER_TRACE(bh, "unmapped");
- ext3_get_block(inode, iblock, bh, 0);
+ ext4_get_block(inode, iblock, bh, 0);
/* unmapped? It's a hole - nothing to do */
if (!buffer_mapped(bh)) {
BUFFER_TRACE(bh, "still unmapped");
goto unlock;
}
- if (ext3_should_journal_data(inode)) {
+ if (ext4_should_journal_data(inode)) {
BUFFER_TRACE(bh, "get write access");
- err = ext3_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, bh);
if (err)
goto unlock;
}
BUFFER_TRACE(bh, "zeroed end of block");
err = 0;
- if (ext3_should_journal_data(inode)) {
- err = ext3_journal_dirty_metadata(handle, bh);
+ if (ext4_should_journal_data(inode)) {
+ err = ext4_journal_dirty_metadata(handle, bh);
} else {
- if (ext3_should_order_data(inode))
- err = ext3_journal_dirty_data(handle, bh);
+ if (ext4_should_order_data(inode))
+ err = ext4_journal_dirty_data(handle, bh);
mark_buffer_dirty(bh);
}
}
/**
- * ext3_find_shared - find the indirect blocks for partial truncation.
+ * ext4_find_shared - find the indirect blocks for partial truncation.
* @inode: inode in question
* @depth: depth of the affected branch
- * @offsets: offsets of pointers in that branch (see ext3_block_to_path)
+ * @offsets: offsets of pointers in that branch (see ext4_block_to_path)
* @chain: place to store the pointers to partial indirect blocks
* @top: place to the (detached) top of branch
*
- * This is a helper function used by ext3_truncate().
+ * This is a helper function used by ext4_truncate().
*
* When we do truncate() we may have to clean the ends of several
* indirect blocks but leave the blocks themselves alive. Block is
* from it (and it is on the path to the first completely truncated
* data block, indeed). We have to free the top of that path along
* with everything to the right of the path. Since no allocation
- * past the truncation point is possible until ext3_truncate()
+ * past the truncation point is possible until ext4_truncate()
* finishes, we may safely do the latter, but top of branch may
* require special attention - pageout below the truncation point
* might try to populate it.
* c) free the subtrees growing from the inode past the @chain[0].
* (no partially truncated stuff there). */
-static Indirect *ext3_find_shared(struct inode *inode, int depth,
+static Indirect *ext4_find_shared(struct inode *inode, int depth,
int offsets[4], Indirect chain[4], __le32 *top)
{
Indirect *partial, *p;
/* Make k index the deepest non-null offest + 1 */
for (k = depth; k > 1 && !offsets[k-1]; k--)
;
- partial = ext3_get_branch(inode, k, offsets, chain, &err);
+ partial = ext4_get_branch(inode, k, offsets, chain, &err);
/* Writer: pointers */
if (!partial)
partial = chain + k-1;
p->p--;
} else {
*top = *p->p;
- /* Nope, don't do this in ext3. Must leave the tree intact */
+ /* Nope, don't do this in ext4. Must leave the tree intact */
#if 0
*p->p = 0;
#endif
* We release `count' blocks on disk, but (last - first) may be greater
* than `count' because there can be holes in there.
*/
-static void ext3_clear_blocks(handle_t *handle, struct inode *inode,
- struct buffer_head *bh, ext3_fsblk_t block_to_free,
+static void ext4_clear_blocks(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh, ext4_fsblk_t block_to_free,
unsigned long count, __le32 *first, __le32 *last)
{
__le32 *p;
if (try_to_extend_transaction(handle, inode)) {
if (bh) {
- BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
- ext3_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
+ ext4_journal_dirty_metadata(handle, bh);
}
- ext3_mark_inode_dirty(handle, inode);
- ext3_journal_test_restart(handle, inode);
+ ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_test_restart(handle, inode);
if (bh) {
BUFFER_TRACE(bh, "retaking write access");
- ext3_journal_get_write_access(handle, bh);
+ ext4_journal_get_write_access(handle, bh);
}
}
/*
* Any buffers which are on the journal will be in memory. We find
- * them on the hash table so journal_revoke() will run journal_forget()
+ * them on the hash table so jbd2_journal_revoke() will run jbd2_journal_forget()
* on them. We've already detached each block from the file, so
- * bforget() in journal_forget() should be safe.
+ * bforget() in jbd2_journal_forget() should be safe.
*
- * AKPM: turn on bforget in journal_forget()!!!
+ * AKPM: turn on bforget in jbd2_journal_forget()!!!
*/
for (p = first; p < last; p++) {
u32 nr = le32_to_cpu(*p);
*p = 0;
bh = sb_find_get_block(inode->i_sb, nr);
- ext3_forget(handle, 0, inode, bh, nr);
+ ext4_forget(handle, 0, inode, bh, nr);
}
}
- ext3_free_blocks(handle, inode, block_to_free, count);
+ ext4_free_blocks(handle, inode, block_to_free, count);
}
/**
- * ext3_free_data - free a list of data blocks
+ * ext4_free_data - free a list of data blocks
* @handle: handle for this transaction
* @inode: inode we are dealing with
* @this_bh: indirect buffer_head which contains *@first and *@last
* @this_bh will be %NULL if @first and @last point into the inode's direct
* block pointers.
*/
-static void ext3_free_data(handle_t *handle, struct inode *inode,
+static void ext4_free_data(handle_t *handle, struct inode *inode,
struct buffer_head *this_bh,
__le32 *first, __le32 *last)
{
- ext3_fsblk_t block_to_free = 0; /* Starting block # of a run */
+ ext4_fsblk_t block_to_free = 0; /* Starting block # of a run */
unsigned long count = 0; /* Number of blocks in the run */
__le32 *block_to_free_p = NULL; /* Pointer into inode/ind
corresponding to
block_to_free */
- ext3_fsblk_t nr; /* Current block # */
+ ext4_fsblk_t nr; /* Current block # */
__le32 *p; /* Pointer into inode/ind
for current block */
int err;
if (this_bh) { /* For indirect block */
BUFFER_TRACE(this_bh, "get_write_access");
- err = ext3_journal_get_write_access(handle, this_bh);
+ err = ext4_journal_get_write_access(handle, this_bh);
/* Important: if we can't update the indirect pointers
* to the blocks, we can't free them. */
if (err)
} else if (nr == block_to_free + count) {
count++;
} else {
- ext3_clear_blocks(handle, inode, this_bh,
+ ext4_clear_blocks(handle, inode, this_bh,
block_to_free,
count, block_to_free_p, p);
block_to_free = nr;
}
if (count > 0)
- ext3_clear_blocks(handle, inode, this_bh, block_to_free,
+ ext4_clear_blocks(handle, inode, this_bh, block_to_free,
count, block_to_free_p, p);
if (this_bh) {
- BUFFER_TRACE(this_bh, "call ext3_journal_dirty_metadata");
- ext3_journal_dirty_metadata(handle, this_bh);
+ BUFFER_TRACE(this_bh, "call ext4_journal_dirty_metadata");
+ ext4_journal_dirty_metadata(handle, this_bh);
}
}
/**
- * ext3_free_branches - free an array of branches
+ * ext4_free_branches - free an array of branches
* @handle: JBD handle for this transaction
* @inode: inode we are dealing with
* @parent_bh: the buffer_head which contains *@first and *@last
* stored as little-endian 32-bit) and updating @inode->i_blocks
* appropriately.
*/
-static void ext3_free_branches(handle_t *handle, struct inode *inode,
+static void ext4_free_branches(handle_t *handle, struct inode *inode,
struct buffer_head *parent_bh,
__le32 *first, __le32 *last, int depth)
{
- ext3_fsblk_t nr;
+ ext4_fsblk_t nr;
__le32 *p;
if (is_handle_aborted(handle))
if (depth--) {
struct buffer_head *bh;
- int addr_per_block = EXT3_ADDR_PER_BLOCK(inode->i_sb);
+ int addr_per_block = EXT4_ADDR_PER_BLOCK(inode->i_sb);
p = last;
while (--p >= first) {
nr = le32_to_cpu(*p);
* (should be rare).
*/
if (!bh) {
- ext3_error(inode->i_sb, "ext3_free_branches",
- "Read failure, inode=%lu, block="E3FSBLK,
+ ext4_error(inode->i_sb, "ext4_free_branches",
+ "Read failure, inode=%lu, block=%llu",
inode->i_ino, nr);
continue;
}
/* This zaps the entire block. Bottom up. */
BUFFER_TRACE(bh, "free child branches");
- ext3_free_branches(handle, inode, bh,
+ ext4_free_branches(handle, inode, bh,
(__le32*)bh->b_data,
(__le32*)bh->b_data + addr_per_block,
depth);
* We've probably journalled the indirect block several
* times during the truncate. But it's no longer
* needed and we now drop it from the transaction via
- * journal_revoke().
+ * jbd2_journal_revoke().
*
* That's easy if it's exclusively part of this
* transaction. But if it's part of the committing
- * transaction then journal_forget() will simply
+ * transaction then jbd2_journal_forget() will simply
* brelse() it. That means that if the underlying
- * block is reallocated in ext3_get_block(),
+ * block is reallocated in ext4_get_block(),
* unmap_underlying_metadata() will find this block
* and will try to get rid of it. damn, damn.
*
* revoke records must be emitted *before* clearing
* this block's bit in the bitmaps.
*/
- ext3_forget(handle, 1, inode, bh, bh->b_blocknr);
+ ext4_forget(handle, 1, inode, bh, bh->b_blocknr);
/*
* Everything below this this pointer has been
if (is_handle_aborted(handle))
return;
if (try_to_extend_transaction(handle, inode)) {
- ext3_mark_inode_dirty(handle, inode);
- ext3_journal_test_restart(handle, inode);
+ ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_test_restart(handle, inode);
}
- ext3_free_blocks(handle, inode, nr, 1);
+ ext4_free_blocks(handle, inode, nr, 1);
if (parent_bh) {
/*
* pointed to by an indirect block: journal it
*/
BUFFER_TRACE(parent_bh, "get_write_access");
- if (!ext3_journal_get_write_access(handle,
+ if (!ext4_journal_get_write_access(handle,
parent_bh)){
*p = 0;
BUFFER_TRACE(parent_bh,
- "call ext3_journal_dirty_metadata");
- ext3_journal_dirty_metadata(handle,
+ "call ext4_journal_dirty_metadata");
+ ext4_journal_dirty_metadata(handle,
parent_bh);
}
}
} else {
/* We have reached the bottom of the tree. */
BUFFER_TRACE(parent_bh, "free data blocks");
- ext3_free_data(handle, inode, parent_bh, first, last);
+ ext4_free_data(handle, inode, parent_bh, first, last);
}
}
/*
- * ext3_truncate()
+ * ext4_truncate()
*
- * We block out ext3_get_block() block instantiations across the entire
- * transaction, and VFS/VM ensures that ext3_truncate() cannot run
+ * We block out ext4_get_block() block instantiations across the entire
+ * transaction, and VFS/VM ensures that ext4_truncate() cannot run
* simultaneously on behalf of the same inode.
*
* As we work through the truncate and commmit bits of it to the journal there
* truncate against the orphan inode list.
*
* The committed inode has the new, desired i_size (which is the same as
- * i_disksize in this case). After a crash, ext3_orphan_cleanup() will see
+ * i_disksize in this case). After a crash, ext4_orphan_cleanup() will see
* that this inode's truncate did not complete and it will again call
- * ext3_truncate() to have another go. So there will be instantiated blocks
- * to the right of the truncation point in a crashed ext3 filesystem. But
+ * ext4_truncate() to have another go. So there will be instantiated blocks
+ * to the right of the truncation point in a crashed ext4 filesystem. But
* that's fine - as long as they are linked from the inode, the post-crash
- * ext3_truncate() run will find them and release them.
+ * ext4_truncate() run will find them and release them.
*/
-void ext3_truncate(struct inode *inode)
+void ext4_truncate(struct inode *inode)
{
handle_t *handle;
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct ext4_inode_info *ei = EXT4_I(inode);
__le32 *i_data = ei->i_data;
- int addr_per_block = EXT3_ADDR_PER_BLOCK(inode->i_sb);
+ int addr_per_block = EXT4_ADDR_PER_BLOCK(inode->i_sb);
struct address_space *mapping = inode->i_mapping;
int offsets[4];
Indirect chain[4];
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
S_ISLNK(inode->i_mode)))
return;
- if (ext3_inode_is_fast_symlink(inode))
+ if (ext4_inode_is_fast_symlink(inode))
return;
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return;
/*
* We have to lock the EOF page here, because lock_page() nests
- * outside journal_start().
+ * outside jbd2_journal_start().
*/
if ((inode->i_size & (blocksize - 1)) == 0) {
/* Block boundary? Nothing to do */
return;
}
+ if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
+ return ext4_ext_truncate(inode, page);
+
handle = start_transaction(inode);
if (IS_ERR(handle)) {
if (page) {
}
last_block = (inode->i_size + blocksize-1)
- >> EXT3_BLOCK_SIZE_BITS(inode->i_sb);
+ >> EXT4_BLOCK_SIZE_BITS(inode->i_sb);
if (page)
- ext3_block_truncate_page(handle, page, mapping, inode->i_size);
+ ext4_block_truncate_page(handle, page, mapping, inode->i_size);
- n = ext3_block_to_path(inode, last_block, offsets, NULL);
+ n = ext4_block_to_path(inode, last_block, offsets, NULL);
if (n == 0)
goto out_stop; /* error */
* Implication: the file must always be in a sane, consistent
* truncatable state while each transaction commits.
*/
- if (ext3_orphan_add(handle, inode))
+ if (ext4_orphan_add(handle, inode))
goto out_stop;
/*
* occurs before the truncate completes, so it is now safe to propagate
* the new, shorter inode size (held for now in i_size) into the
* on-disk inode. We do this via i_disksize, which is the value which
- * ext3 *really* writes onto the disk inode.
+ * ext4 *really* writes onto the disk inode.
*/
ei->i_disksize = inode->i_size;
/*
- * From here we block out all ext3_get_block() callers who want to
+ * From here we block out all ext4_get_block() callers who want to
* modify the block allocation tree.
*/
mutex_lock(&ei->truncate_mutex);
if (n == 1) { /* direct blocks */
- ext3_free_data(handle, inode, NULL, i_data+offsets[0],
- i_data + EXT3_NDIR_BLOCKS);
+ ext4_free_data(handle, inode, NULL, i_data+offsets[0],
+ i_data + EXT4_NDIR_BLOCKS);
goto do_indirects;
}
- partial = ext3_find_shared(inode, n, offsets, chain, &nr);
+ partial = ext4_find_shared(inode, n, offsets, chain, &nr);
/* Kill the top of shared branch (not detached) */
if (nr) {
if (partial == chain) {
/* Shared branch grows from the inode */
- ext3_free_branches(handle, inode, NULL,
+ ext4_free_branches(handle, inode, NULL,
&nr, &nr+1, (chain+n-1) - partial);
*partial->p = 0;
/*
} else {
/* Shared branch grows from an indirect block */
BUFFER_TRACE(partial->bh, "get_write_access");
- ext3_free_branches(handle, inode, partial->bh,
+ ext4_free_branches(handle, inode, partial->bh,
partial->p,
partial->p+1, (chain+n-1) - partial);
}
}
/* Clear the ends of indirect blocks on the shared branch */
while (partial > chain) {
- ext3_free_branches(handle, inode, partial->bh, partial->p + 1,
+ ext4_free_branches(handle, inode, partial->bh, partial->p + 1,
(__le32*)partial->bh->b_data+addr_per_block,
(chain+n-1) - partial);
BUFFER_TRACE(partial->bh, "call brelse");
/* Kill the remaining (whole) subtrees */
switch (offsets[0]) {
default:
- nr = i_data[EXT3_IND_BLOCK];
+ nr = i_data[EXT4_IND_BLOCK];
if (nr) {
- ext3_free_branches(handle, inode, NULL, &nr, &nr+1, 1);
- i_data[EXT3_IND_BLOCK] = 0;
+ ext4_free_branches(handle, inode, NULL, &nr, &nr+1, 1);
+ i_data[EXT4_IND_BLOCK] = 0;
}
- case EXT3_IND_BLOCK:
- nr = i_data[EXT3_DIND_BLOCK];
+ case EXT4_IND_BLOCK:
+ nr = i_data[EXT4_DIND_BLOCK];
if (nr) {
- ext3_free_branches(handle, inode, NULL, &nr, &nr+1, 2);
- i_data[EXT3_DIND_BLOCK] = 0;
+ ext4_free_branches(handle, inode, NULL, &nr, &nr+1, 2);
+ i_data[EXT4_DIND_BLOCK] = 0;
}
- case EXT3_DIND_BLOCK:
- nr = i_data[EXT3_TIND_BLOCK];
+ case EXT4_DIND_BLOCK:
+ nr = i_data[EXT4_TIND_BLOCK];
if (nr) {
- ext3_free_branches(handle, inode, NULL, &nr, &nr+1, 3);
- i_data[EXT3_TIND_BLOCK] = 0;
+ ext4_free_branches(handle, inode, NULL, &nr, &nr+1, 3);
+ i_data[EXT4_TIND_BLOCK] = 0;
}
- case EXT3_TIND_BLOCK:
+ case EXT4_TIND_BLOCK:
;
}
- ext3_discard_reservation(inode);
+ ext4_discard_reservation(inode);
mutex_unlock(&ei->truncate_mutex);
inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
- ext3_mark_inode_dirty(handle, inode);
+ ext4_mark_inode_dirty(handle, inode);
/*
* In a multi-transaction truncate, we only make the final transaction
* If this was a simple ftruncate(), and the file will remain alive
* then we need to clear up the orphan record which we created above.
* However, if this was a real unlink then we were called by
- * ext3_delete_inode(), and we allow that function to clean up the
+ * ext4_delete_inode(), and we allow that function to clean up the
* orphan info for us.
*/
if (inode->i_nlink)
- ext3_orphan_del(handle, inode);
+ ext4_orphan_del(handle, inode);
- ext3_journal_stop(handle);
+ ext4_journal_stop(handle);
}
-static ext3_fsblk_t ext3_get_inode_block(struct super_block *sb,
- unsigned long ino, struct ext3_iloc *iloc)
+static ext4_fsblk_t ext4_get_inode_block(struct super_block *sb,
+ unsigned long ino, struct ext4_iloc *iloc)
{
unsigned long desc, group_desc, block_group;
unsigned long offset;
- ext3_fsblk_t block;
+ ext4_fsblk_t block;
struct buffer_head *bh;
- struct ext3_group_desc * gdp;
+ struct ext4_group_desc * gdp;
- if (!ext3_valid_inum(sb, ino)) {
+ if (!ext4_valid_inum(sb, ino)) {
/*
* This error is already checked for in namei.c unless we are
* looking at an NFS filehandle, in which case no error
return 0;
}
- block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb);
- if (block_group >= EXT3_SB(sb)->s_groups_count) {
- ext3_error(sb,"ext3_get_inode_block","group >= groups count");
+ block_group = (ino - 1) / EXT4_INODES_PER_GROUP(sb);
+ if (block_group >= EXT4_SB(sb)->s_groups_count) {
+ ext4_error(sb,"ext4_get_inode_block","group >= groups count");
return 0;
}
smp_rmb();
- group_desc = block_group >> EXT3_DESC_PER_BLOCK_BITS(sb);
- desc = block_group & (EXT3_DESC_PER_BLOCK(sb) - 1);
- bh = EXT3_SB(sb)->s_group_desc[group_desc];
+ group_desc = block_group >> EXT4_DESC_PER_BLOCK_BITS(sb);
+ desc = block_group & (EXT4_DESC_PER_BLOCK(sb) - 1);
+ bh = EXT4_SB(sb)->s_group_desc[group_desc];
if (!bh) {
- ext3_error (sb, "ext3_get_inode_block",
+ ext4_error (sb, "ext4_get_inode_block",
"Descriptor not loaded");
return 0;
}
- gdp = (struct ext3_group_desc *)bh->b_data;
+ gdp = (struct ext4_group_desc *)((__u8 *)bh->b_data +
+ desc * EXT4_DESC_SIZE(sb));
/*
* Figure out the offset within the block group inode table
*/
- offset = ((ino - 1) % EXT3_INODES_PER_GROUP(sb)) *
- EXT3_INODE_SIZE(sb);
- block = le32_to_cpu(gdp[desc].bg_inode_table) +
- (offset >> EXT3_BLOCK_SIZE_BITS(sb));
+ offset = ((ino - 1) % EXT4_INODES_PER_GROUP(sb)) *
+ EXT4_INODE_SIZE(sb);
+ block = ext4_inode_table(sb, gdp) +
+ (offset >> EXT4_BLOCK_SIZE_BITS(sb));
iloc->block_group = block_group;
- iloc->offset = offset & (EXT3_BLOCK_SIZE(sb) - 1);
+ iloc->offset = offset & (EXT4_BLOCK_SIZE(sb) - 1);
return block;
}
/*
- * ext3_get_inode_loc returns with an extra refcount against the inode's
+ * ext4_get_inode_loc returns with an extra refcount against the inode's
* underlying buffer_head on success. If 'in_mem' is true, we have all
* data in memory that is needed to recreate the on-disk version of this
* inode.
*/
-static int __ext3_get_inode_loc(struct inode *inode,
- struct ext3_iloc *iloc, int in_mem)
+static int __ext4_get_inode_loc(struct inode *inode,
+ struct ext4_iloc *iloc, int in_mem)
{
- ext3_fsblk_t block;
+ ext4_fsblk_t block;
struct buffer_head *bh;
- block = ext3_get_inode_block(inode->i_sb, inode->i_ino, iloc);
+ block = ext4_get_inode_block(inode->i_sb, inode->i_ino, iloc);
if (!block)
return -EIO;
bh = sb_getblk(inode->i_sb, block);
if (!bh) {
- ext3_error (inode->i_sb, "ext3_get_inode_loc",
+ ext4_error (inode->i_sb, "ext4_get_inode_loc",
"unable to read inode block - "
- "inode=%lu, block="E3FSBLK,
+ "inode=%lu, block=%llu",
inode->i_ino, block);
return -EIO;
}
*/
if (in_mem) {
struct buffer_head *bitmap_bh;
- struct ext3_group_desc *desc;
+ struct ext4_group_desc *desc;
int inodes_per_buffer;
int inode_offset, i;
int block_group;
int start;
block_group = (inode->i_ino - 1) /
- EXT3_INODES_PER_GROUP(inode->i_sb);
+ EXT4_INODES_PER_GROUP(inode->i_sb);
inodes_per_buffer = bh->b_size /
- EXT3_INODE_SIZE(inode->i_sb);
+ EXT4_INODE_SIZE(inode->i_sb);
inode_offset = ((inode->i_ino - 1) %
- EXT3_INODES_PER_GROUP(inode->i_sb));
+ EXT4_INODES_PER_GROUP(inode->i_sb));
start = inode_offset & ~(inodes_per_buffer - 1);
/* Is the inode bitmap in cache? */
- desc = ext3_get_group_desc(inode->i_sb,
+ desc = ext4_get_group_desc(inode->i_sb,
block_group, NULL);
if (!desc)
goto make_io;
bitmap_bh = sb_getblk(inode->i_sb,
- le32_to_cpu(desc->bg_inode_bitmap));
+ ext4_inode_bitmap(inode->i_sb, desc));
if (!bitmap_bh)
goto make_io;
for (i = start; i < start + inodes_per_buffer; i++) {
if (i == inode_offset)
continue;
- if (ext3_test_bit(i, bitmap_bh->b_data))
+ if (ext4_test_bit(i, bitmap_bh->b_data))
break;
}
brelse(bitmap_bh);
submit_bh(READ_META, bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
- ext3_error(inode->i_sb, "ext3_get_inode_loc",
+ ext4_error(inode->i_sb, "ext4_get_inode_loc",
"unable to read inode block - "
- "inode=%lu, block="E3FSBLK,
+ "inode=%lu, block=%llu",
inode->i_ino, block);
brelse(bh);
return -EIO;
return 0;
}
-int ext3_get_inode_loc(struct inode *inode, struct ext3_iloc *iloc)
+int ext4_get_inode_loc(struct inode *inode, struct ext4_iloc *iloc)
{
/* We have all inode data except xattrs in memory here. */
- return __ext3_get_inode_loc(inode, iloc,
- !(EXT3_I(inode)->i_state & EXT3_STATE_XATTR));
+ return __ext4_get_inode_loc(inode, iloc,
+ !(EXT4_I(inode)->i_state & EXT4_STATE_XATTR));
}
-void ext3_set_inode_flags(struct inode *inode)
+void ext4_set_inode_flags(struct inode *inode)
{
- unsigned int flags = EXT3_I(inode)->i_flags;
+ unsigned int flags = EXT4_I(inode)->i_flags;
inode->i_flags &= ~(S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC);
- if (flags & EXT3_SYNC_FL)
+ if (flags & EXT4_SYNC_FL)
inode->i_flags |= S_SYNC;
- if (flags & EXT3_APPEND_FL)
+ if (flags & EXT4_APPEND_FL)
inode->i_flags |= S_APPEND;
- if (flags & EXT3_IMMUTABLE_FL)
+ if (flags & EXT4_IMMUTABLE_FL)
inode->i_flags |= S_IMMUTABLE;
- if (flags & EXT3_NOATIME_FL)
+ if (flags & EXT4_NOATIME_FL)
inode->i_flags |= S_NOATIME;
- if (flags & EXT3_DIRSYNC_FL)
+ if (flags & EXT4_DIRSYNC_FL)
inode->i_flags |= S_DIRSYNC;
}
-void ext3_read_inode(struct inode * inode)
+void ext4_read_inode(struct inode * inode)
{
- struct ext3_iloc iloc;
- struct ext3_inode *raw_inode;
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct ext4_iloc iloc;
+ struct ext4_inode *raw_inode;
+ struct ext4_inode_info *ei = EXT4_I(inode);
struct buffer_head *bh;
int block;
-#ifdef CONFIG_EXT3_FS_POSIX_ACL
- ei->i_acl = EXT3_ACL_NOT_CACHED;
- ei->i_default_acl = EXT3_ACL_NOT_CACHED;
+#ifdef CONFIG_EXT4DEV_FS_POSIX_ACL
+ ei->i_acl = EXT4_ACL_NOT_CACHED;
+ ei->i_default_acl = EXT4_ACL_NOT_CACHED;
#endif
ei->i_block_alloc_info = NULL;
- if (__ext3_get_inode_loc(inode, &iloc, 0))
+ if (__ext4_get_inode_loc(inode, &iloc, 0))
goto bad_inode;
bh = iloc.bh;
- raw_inode = ext3_raw_inode(&iloc);
+ raw_inode = ext4_raw_inode(&iloc);
inode->i_mode = le16_to_cpu(raw_inode->i_mode);
inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
inode->i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
*/
if (inode->i_nlink == 0) {
if (inode->i_mode == 0 ||
- !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ORPHAN_FS)) {
+ !(EXT4_SB(inode->i_sb)->s_mount_state & EXT4_ORPHAN_FS)) {
/* this inode is deleted */
brelse (bh);
goto bad_inode;
}
inode->i_blocks = le32_to_cpu(raw_inode->i_blocks);
ei->i_flags = le32_to_cpu(raw_inode->i_flags);
-#ifdef EXT3_FRAGMENTS
+#ifdef EXT4_FRAGMENTS
ei->i_faddr = le32_to_cpu(raw_inode->i_faddr);
ei->i_frag_no = raw_inode->i_frag;
ei->i_frag_size = raw_inode->i_fsize;
#endif
ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl);
+ if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
+ cpu_to_le32(EXT4_OS_HURD))
+ ei->i_file_acl |=
+ ((__u64)le16_to_cpu(raw_inode->i_file_acl_high)) << 32;
if (!S_ISREG(inode->i_mode)) {
ei->i_dir_acl = le32_to_cpu(raw_inode->i_dir_acl);
} else {
* NOTE! The in-memory inode i_data array is in little-endian order
* even on big-endian machines: we do NOT byteswap the block numbers!
*/
- for (block = 0; block < EXT3_N_BLOCKS; block++)
+ for (block = 0; block < EXT4_N_BLOCKS; block++)
ei->i_data[block] = raw_inode->i_block[block];
INIT_LIST_HEAD(&ei->i_orphan);
- if (inode->i_ino >= EXT3_FIRST_INO(inode->i_sb) + 1 &&
- EXT3_INODE_SIZE(inode->i_sb) > EXT3_GOOD_OLD_INODE_SIZE) {
+ if (inode->i_ino >= EXT4_FIRST_INO(inode->i_sb) + 1 &&
+ EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) {
/*
* When mke2fs creates big inodes it does not zero out
- * the unused bytes above EXT3_GOOD_OLD_INODE_SIZE,
+ * the unused bytes above EXT4_GOOD_OLD_INODE_SIZE,
* so ignore those first few inodes.
*/
ei->i_extra_isize = le16_to_cpu(raw_inode->i_extra_isize);
- if (EXT3_GOOD_OLD_INODE_SIZE + ei->i_extra_isize >
- EXT3_INODE_SIZE(inode->i_sb))
+ if (EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize >
+ EXT4_INODE_SIZE(inode->i_sb))
goto bad_inode;
if (ei->i_extra_isize == 0) {
/* The extra space is currently unused. Use it. */
- ei->i_extra_isize = sizeof(struct ext3_inode) -
- EXT3_GOOD_OLD_INODE_SIZE;
+ ei->i_extra_isize = sizeof(struct ext4_inode) -
+ EXT4_GOOD_OLD_INODE_SIZE;
} else {
__le32 *magic = (void *)raw_inode +
- EXT3_GOOD_OLD_INODE_SIZE +
+ EXT4_GOOD_OLD_INODE_SIZE +
ei->i_extra_isize;
- if (*magic == cpu_to_le32(EXT3_XATTR_MAGIC))
- ei->i_state |= EXT3_STATE_XATTR;
+ if (*magic == cpu_to_le32(EXT4_XATTR_MAGIC))
+ ei->i_state |= EXT4_STATE_XATTR;
}
} else
ei->i_extra_isize = 0;
if (S_ISREG(inode->i_mode)) {
- inode->i_op = &ext3_file_inode_operations;
- inode->i_fop = &ext3_file_operations;
- ext3_set_aops(inode);
+ inode->i_op = &ext4_file_inode_operations;
+ inode->i_fop = &ext4_file_operations;
+ ext4_set_aops(inode);
} else if (S_ISDIR(inode->i_mode)) {
- inode->i_op = &ext3_dir_inode_operations;
- inode->i_fop = &ext3_dir_operations;
+ inode->i_op = &ext4_dir_inode_operations;
+ inode->i_fop = &ext4_dir_operations;
} else if (S_ISLNK(inode->i_mode)) {
- if (ext3_inode_is_fast_symlink(inode))
- inode->i_op = &ext3_fast_symlink_inode_operations;
+ if (ext4_inode_is_fast_symlink(inode))
+ inode->i_op = &ext4_fast_symlink_inode_operations;
else {
- inode->i_op = &ext3_symlink_inode_operations;
- ext3_set_aops(inode);
+ inode->i_op = &ext4_symlink_inode_operations;
+ ext4_set_aops(inode);
}
} else {
- inode->i_op = &ext3_special_inode_operations;
+ inode->i_op = &ext4_special_inode_operations;
if (raw_inode->i_block[0])
init_special_inode(inode, inode->i_mode,
old_decode_dev(le32_to_cpu(raw_inode->i_block[0])));
new_decode_dev(le32_to_cpu(raw_inode->i_block[1])));
}
brelse (iloc.bh);
- ext3_set_inode_flags(inode);
+ ext4_set_inode_flags(inode);
return;
bad_inode:
*
* The caller must have write access to iloc->bh.
*/
-static int ext3_do_update_inode(handle_t *handle,
+static int ext4_do_update_inode(handle_t *handle,
struct inode *inode,
- struct ext3_iloc *iloc)
+ struct ext4_iloc *iloc)
{
- struct ext3_inode *raw_inode = ext3_raw_inode(iloc);
- struct ext3_inode_info *ei = EXT3_I(inode);
+ struct ext4_inode *raw_inode = ext4_raw_inode(iloc);
+ struct ext4_inode_info *ei = EXT4_I(inode);
struct buffer_head *bh = iloc->bh;
int err = 0, rc, block;
/* For fields not not tracking in the in-memory inode,
* initialise them to zero for new inodes. */
- if (ei->i_state & EXT3_STATE_NEW)
- memset(raw_inode, 0, EXT3_SB(inode->i_sb)->s_inode_size);
+ if (ei->i_state & EXT4_STATE_NEW)
+ memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size);
raw_inode->i_mode = cpu_to_le16(inode->i_mode);
if(!(test_opt(inode->i_sb, NO_UID32))) {
raw_inode->i_blocks = cpu_to_le32(inode->i_blocks);
raw_inode->i_dtime = cpu_to_le32(ei->i_dtime);
raw_inode->i_flags = cpu_to_le32(ei->i_flags);
-#ifdef EXT3_FRAGMENTS
+#ifdef EXT4_FRAGMENTS
raw_inode->i_faddr = cpu_to_le32(ei->i_faddr);
raw_inode->i_frag = ei->i_frag_no;
raw_inode->i_fsize = ei->i_frag_size;
#endif
+ if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
+ cpu_to_le32(EXT4_OS_HURD))
+ raw_inode->i_file_acl_high =
+ cpu_to_le16(ei->i_file_acl >> 32);
raw_inode->i_file_acl = cpu_to_le32(ei->i_file_acl);
if (!S_ISREG(inode->i_mode)) {
raw_inode->i_dir_acl = cpu_to_le32(ei->i_dir_acl);
cpu_to_le32(ei->i_disksize >> 32);
if (ei->i_disksize > 0x7fffffffULL) {
struct super_block *sb = inode->i_sb;
- if (!EXT3_HAS_RO_COMPAT_FEATURE(sb,
- EXT3_FEATURE_RO_COMPAT_LARGE_FILE) ||
- EXT3_SB(sb)->s_es->s_rev_level ==
- cpu_to_le32(EXT3_GOOD_OLD_REV)) {
+ if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_LARGE_FILE) ||
+ EXT4_SB(sb)->s_es->s_rev_level ==
+ cpu_to_le32(EXT4_GOOD_OLD_REV)) {
/* If this is the first large file
* created, add a flag to the superblock.
*/
- err = ext3_journal_get_write_access(handle,
- EXT3_SB(sb)->s_sbh);
+ err = ext4_journal_get_write_access(handle,
+ EXT4_SB(sb)->s_sbh);
if (err)
goto out_brelse;
- ext3_update_dynamic_rev(sb);
- EXT3_SET_RO_COMPAT_FEATURE(sb,
- EXT3_FEATURE_RO_COMPAT_LARGE_FILE);
+ ext4_update_dynamic_rev(sb);
+ EXT4_SET_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
sb->s_dirt = 1;
handle->h_sync = 1;
- err = ext3_journal_dirty_metadata(handle,
- EXT3_SB(sb)->s_sbh);
+ err = ext4_journal_dirty_metadata(handle,
+ EXT4_SB(sb)->s_sbh);
}
}
}
cpu_to_le32(new_encode_dev(inode->i_rdev));
raw_inode->i_block[2] = 0;
}
- } else for (block = 0; block < EXT3_N_BLOCKS; block++)
+ } else for (block = 0; block < EXT4_N_BLOCKS; block++)
raw_inode->i_block[block] = ei->i_data[block];
if (ei->i_extra_isize)
raw_inode->i_extra_isize = cpu_to_le16(ei->i_extra_isize);
- BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
- rc = ext3_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
+ rc = ext4_journal_dirty_metadata(handle, bh);
if (!err)
err = rc;
- ei->i_state &= ~EXT3_STATE_NEW;
+ ei->i_state &= ~EXT4_STATE_NEW;
out_brelse:
brelse (bh);
- ext3_std_error(inode->i_sb, err);
+ ext4_std_error(inode->i_sb, err);
return err;
}
/*
- * ext3_write_inode()
+ * ext4_write_inode()
*
* We are called from a few places:
*
*
* In all cases it is actually safe for us to return without doing anything,
* because the inode has been copied into a raw inode buffer in
- * ext3_mark_inode_dirty(). This is a correctness thing for O_SYNC and for
+ * ext4_mark_inode_dirty(). This is a correctness thing for O_SYNC and for
* knfsd.
*
* Note that we are absolutely dependent upon all inode dirtiers doing the
* `stuff()' is running, and the new i_size will be lost. Plus the inode
* will no longer be on the superblock's dirty inode list.
*/
-int ext3_write_inode(struct inode *inode, int wait)
+int ext4_write_inode(struct inode *inode, int wait)
{
if (current->flags & PF_MEMALLOC)
return 0;
- if (ext3_journal_current_handle()) {
+ if (ext4_journal_current_handle()) {
jbd_debug(0, "called recursively, non-PF_MEMALLOC!\n");
dump_stack();
return -EIO;
if (!wait)
return 0;
- return ext3_force_commit(inode->i_sb);
+ return ext4_force_commit(inode->i_sb);
}
/*
- * ext3_setattr()
+ * ext4_setattr()
*
* Called from notify_change.
*
*
* Called with inode->sem down.
*/
-int ext3_setattr(struct dentry *dentry, struct iattr *attr)
+int ext4_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = dentry->d_inode;
int error, rc = 0;
/* (user+group)*(old+new) structure, inode write (sb,
* inode block, ? - but truncate inode update has it) */
- handle = ext3_journal_start(inode, 2*(EXT3_QUOTA_INIT_BLOCKS(inode->i_sb)+
- EXT3_QUOTA_DEL_BLOCKS(inode->i_sb))+3);
+ handle = ext4_journal_start(inode, 2*(EXT4_QUOTA_INIT_BLOCKS(inode->i_sb)+
+ EXT4_QUOTA_DEL_BLOCKS(inode->i_sb))+3);
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
goto err_out;
}
error = DQUOT_TRANSFER(inode, attr) ? -EDQUOT : 0;
if (error) {
- ext3_journal_stop(handle);
+ ext4_journal_stop(handle);
return error;
}
/* Update corresponding info in inode so that everything is in
inode->i_uid = attr->ia_uid;
if (attr->ia_valid & ATTR_GID)
inode->i_gid = attr->ia_gid;
- error = ext3_mark_inode_dirty(handle, inode);
- ext3_journal_stop(handle);
+ error = ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_stop(handle);
}
if (S_ISREG(inode->i_mode) &&
attr->ia_valid & ATTR_SIZE && attr->ia_size < inode->i_size) {
handle_t *handle;
- handle = ext3_journal_start(inode, 3);
+ handle = ext4_journal_start(inode, 3);
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
goto err_out;
}
- error = ext3_orphan_add(handle, inode);
- EXT3_I(inode)->i_disksize = attr->ia_size;
- rc = ext3_mark_inode_dirty(handle, inode);
+ error = ext4_orphan_add(handle, inode);
+ EXT4_I(inode)->i_disksize = attr->ia_size;
+ rc = ext4_mark_inode_dirty(handle, inode);
if (!error)
error = rc;
- ext3_journal_stop(handle);
+ ext4_journal_stop(handle);
}
rc = inode_setattr(inode, attr);
- /* If inode_setattr's call to ext3_truncate failed to get a
+ /* If inode_setattr's call to ext4_truncate failed to get a
* transaction handle at all, we need to clean up the in-core
* orphan list manually. */
if (inode->i_nlink)
- ext3_orphan_del(NULL, inode);
+ ext4_orphan_del(NULL, inode);
if (!rc && (ia_valid & ATTR_MODE))
- rc = ext3_acl_chmod(inode);
+ rc = ext4_acl_chmod(inode);
err_out:
- ext3_std_error(inode->i_sb, error);
+ ext4_std_error(inode->i_sb, error);
if (!error)
error = rc;
return error;
* N+5 group descriptor summary blocks
* 1 inode block
* 1 superblock.
- * 2 * EXT3_SINGLEDATA_TRANS_BLOCKS for the quote files
+ * 2 * EXT4_SINGLEDATA_TRANS_BLOCKS for the quote files
*
- * 3 * (N + 5) + 2 + 2 * EXT3_SINGLEDATA_TRANS_BLOCKS
+ * 3 * (N + 5) + 2 + 2 * EXT4_SINGLEDATA_TRANS_BLOCKS
*
* With ordered or writeback data it's the same, less the N data blocks.
*
* block and work out the exact number of indirects which are touched. Pah.
*/
-static int ext3_writepage_trans_blocks(struct inode *inode)
+int ext4_writepage_trans_blocks(struct inode *inode)
{
- int bpp = ext3_journal_blocks_per_page(inode);
- int indirects = (EXT3_NDIR_BLOCKS % bpp) ? 5 : 3;
+ int bpp = ext4_journal_blocks_per_page(inode);
+ int indirects = (EXT4_NDIR_BLOCKS % bpp) ? 5 : 3;
int ret;
- if (ext3_should_journal_data(inode))
+ if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
+ return ext4_ext_writepage_trans_blocks(inode, bpp);
+
+ if (ext4_should_journal_data(inode))
ret = 3 * (bpp + indirects) + 2;
else
ret = 2 * (bpp + indirects) + 2;
#ifdef CONFIG_QUOTA
/* We know that structure was already allocated during DQUOT_INIT so
* we will be updating only the data blocks + inodes */
- ret += 2*EXT3_QUOTA_TRANS_BLOCKS(inode->i_sb);
+ ret += 2*EXT4_QUOTA_TRANS_BLOCKS(inode->i_sb);
#endif
return ret;
}
/*
- * The caller must have previously called ext3_reserve_inode_write().
+ * The caller must have previously called ext4_reserve_inode_write().
* Give this, we know that the caller already has write access to iloc->bh.
*/
-int ext3_mark_iloc_dirty(handle_t *handle,
- struct inode *inode, struct ext3_iloc *iloc)
+int ext4_mark_iloc_dirty(handle_t *handle,
+ struct inode *inode, struct ext4_iloc *iloc)
{
int err = 0;
/* the do_update_inode consumes one bh->b_count */
get_bh(iloc->bh);
- /* ext3_do_update_inode() does journal_dirty_metadata */
- err = ext3_do_update_inode(handle, inode, iloc);
+ /* ext4_do_update_inode() does jbd2_journal_dirty_metadata */
+ err = ext4_do_update_inode(handle, inode, iloc);
put_bh(iloc->bh);
return err;
}
*/
int
-ext3_reserve_inode_write(handle_t *handle, struct inode *inode,
- struct ext3_iloc *iloc)
+ext4_reserve_inode_write(handle_t *handle, struct inode *inode,
+ struct ext4_iloc *iloc)
{
int err = 0;
if (handle) {
- err = ext3_get_inode_loc(inode, iloc);
+ err = ext4_get_inode_loc(inode, iloc);
if (!err) {
BUFFER_TRACE(iloc->bh, "get_write_access");
- err = ext3_journal_get_write_access(handle, iloc->bh);
+ err = ext4_journal_get_write_access(handle, iloc->bh);
if (err) {
brelse(iloc->bh);
iloc->bh = NULL;
}
}
}
- ext3_std_error(inode->i_sb, err);
+ ext4_std_error(inode->i_sb, err);
return err;
}
* to do a write_super() to free up some memory. It has the desired
* effect.
*/
-int ext3_mark_inode_dirty(handle_t *handle, struct inode *inode)
+int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
{
- struct ext3_iloc iloc;
+ struct ext4_iloc iloc;
int err;
might_sleep();
- err = ext3_reserve_inode_write(handle, inode, &iloc);
+ err = ext4_reserve_inode_write(handle, inode, &iloc);
if (!err)
- err = ext3_mark_iloc_dirty(handle, inode, &iloc);
+ err = ext4_mark_iloc_dirty(handle, inode, &iloc);
return err;
}
/*
- * ext3_dirty_inode() is called from __mark_inode_dirty()
+ * ext4_dirty_inode() is called from __mark_inode_dirty()
*
* We're really interested in the case where a file is being extended.
* i_size has been changed by generic_commit_write() and we thus need
* so would cause a commit on atime updates, which we don't bother doing.
* We handle synchronous inodes at the highest possible level.
*/
-void ext3_dirty_inode(struct inode *inode)
+void ext4_dirty_inode(struct inode *inode)
{
- handle_t *current_handle = ext3_journal_current_handle();
+ handle_t *current_handle = ext4_journal_current_handle();
handle_t *handle;
- handle = ext3_journal_start(inode, 2);
+ handle = ext4_journal_start(inode, 2);
if (IS_ERR(handle))
goto out;
if (current_handle &&
} else {
jbd_debug(5, "marking dirty. outer handle=%p\n",
current_handle);
- ext3_mark_inode_dirty(handle, inode);
+ ext4_mark_inode_dirty(handle, inode);
}
- ext3_journal_stop(handle);
+ ext4_journal_stop(handle);
out:
return;
}
/*
* Bind an inode's backing buffer_head into this transaction, to prevent
* it from being flushed to disk early. Unlike
- * ext3_reserve_inode_write, this leaves behind no bh reference and
+ * ext4_reserve_inode_write, this leaves behind no bh reference and
* returns no iloc structure, so the caller needs to repeat the iloc
* lookup to mark the inode dirty later.
*/
-static int ext3_pin_inode(handle_t *handle, struct inode *inode)
+static int ext4_pin_inode(handle_t *handle, struct inode *inode)
{
- struct ext3_iloc iloc;
+ struct ext4_iloc iloc;
int err = 0;
if (handle) {
- err = ext3_get_inode_loc(inode, &iloc);
+ err = ext4_get_inode_loc(inode, &iloc);
if (!err) {
BUFFER_TRACE(iloc.bh, "get_write_access");
- err = journal_get_write_access(handle, iloc.bh);
+ err = jbd2_journal_get_write_access(handle, iloc.bh);
if (!err)
- err = ext3_journal_dirty_metadata(handle,
+ err = ext4_journal_dirty_metadata(handle,
iloc.bh);
brelse(iloc.bh);
}
}
- ext3_std_error(inode->i_sb, err);
+ ext4_std_error(inode->i_sb, err);
return err;
}
#endif
-int ext3_change_inode_journal_flag(struct inode *inode, int val)
+int ext4_change_inode_journal_flag(struct inode *inode, int val)
{
journal_t *journal;
handle_t *handle;
* nobody is changing anything.
*/
- journal = EXT3_JOURNAL(inode);
+ journal = EXT4_JOURNAL(inode);
if (is_journal_aborted(journal) || IS_RDONLY(inode))
return -EROFS;
- journal_lock_updates(journal);
- journal_flush(journal);
+ jbd2_journal_lock_updates(journal);
+ jbd2_journal_flush(journal);
/*
* OK, there are no updates running now, and all cached data is
*/
if (val)
- EXT3_I(inode)->i_flags |= EXT3_JOURNAL_DATA_FL;
+ EXT4_I(inode)->i_flags |= EXT4_JOURNAL_DATA_FL;
else
- EXT3_I(inode)->i_flags &= ~EXT3_JOURNAL_DATA_FL;
- ext3_set_aops(inode);
+ EXT4_I(inode)->i_flags &= ~EXT4_JOURNAL_DATA_FL;
+ ext4_set_aops(inode);
- journal_unlock_updates(journal);
+ jbd2_journal_unlock_updates(journal);
/* Finally we can mark the inode as dirty. */
- handle = ext3_journal_start(inode, 1);
+ handle = ext4_journal_start(inode, 1);
if (IS_ERR(handle))
return PTR_ERR(handle);
- err = ext3_mark_inode_dirty(handle, inode);
+ err = ext4_mark_inode_dirty(handle, inode);
handle->h_sync = 1;
- ext3_journal_stop(handle);
- ext3_std_error(inode->i_sb, err);
+ ext4_journal_stop(handle);
+ ext4_std_error(inode->i_sb, err);
return err;
}
projects / linux-2.6 / blobdiff