*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
*/
#include <linux/sched.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/gfs2_ondisk.h>
+#include <linux/lm_interface.h>
#include "gfs2.h"
-#include "lm_interface.h"
#include "incore.h"
#include "bmap.h"
#include "glock.h"
#include "recovery.h"
#include "rgrp.h"
#include "util.h"
+#include "trans.h"
+/**
+ * ail_empty_gl - remove all buffers for a given lock from the AIL
+ * @gl: the glock
+ *
+ * None of the buffers should be dirty, locked, or pinned.
+ */
+
+static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
+{
+ struct gfs2_sbd *sdp = gl->gl_sbd;
+ unsigned int blocks;
+ struct list_head *head = &gl->gl_ail_list;
+ struct gfs2_bufdata *bd;
+ struct buffer_head *bh;
+ u64 blkno;
+ int error;
+
+ blocks = atomic_read(&gl->gl_ail_count);
+ if (!blocks)
+ return;
+
+ error = gfs2_trans_begin(sdp, 0, blocks);
+ if (gfs2_assert_withdraw(sdp, !error))
+ return;
+
+ gfs2_log_lock(sdp);
+ while (!list_empty(head)) {
+ bd = list_entry(head->next, struct gfs2_bufdata,
+ bd_ail_gl_list);
+ bh = bd->bd_bh;
+ blkno = bh->b_blocknr;
+ gfs2_assert_withdraw(sdp, !buffer_busy(bh));
+
+ bd->bd_ail = NULL;
+ list_del(&bd->bd_ail_st_list);
+ list_del(&bd->bd_ail_gl_list);
+ atomic_dec(&gl->gl_ail_count);
+ brelse(bh);
+ gfs2_log_unlock(sdp);
+
+ gfs2_trans_add_revoke(sdp, blkno);
+
+ gfs2_log_lock(sdp);
+ }
+ gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
+ gfs2_log_unlock(sdp);
+
+ gfs2_trans_end(sdp);
+ gfs2_log_flush(sdp, NULL);
+}
/**
* gfs2_pte_inval - Sync and invalidate all PTEs associated with a glock
}
/**
- * gfs2_page_sync - Sync the data pages (not metadata) associated with a glock
+ * gfs2_page_wait - Wait for writeback of data
* @gl: the glock
- * @flags: DIO_START | DIO_WAIT
*
* Syncs data (not metadata) for a regular file.
* No-op for all other types.
*/
-static void gfs2_page_sync(struct gfs2_glock *gl, int flags)
+static void gfs2_page_wait(struct gfs2_glock *gl)
{
- struct gfs2_inode *ip;
- struct inode *inode;
- struct address_space *mapping;
- int error = 0;
+ struct gfs2_inode *ip = gl->gl_object;
+ struct inode *inode = &ip->i_inode;
+ struct address_space *mapping = inode->i_mapping;
+ int error;
- ip = gl->gl_object;
- inode = &ip->i_inode;
- if (!ip || !S_ISREG(ip->i_di.di_mode))
+ if (!S_ISREG(ip->i_di.di_mode))
return;
- mapping = inode->i_mapping;
-
- if (flags & DIO_START)
- filemap_fdatawrite(mapping);
- if (!error && (flags & DIO_WAIT))
- error = filemap_fdatawait(mapping);
+ error = filemap_fdatawait(mapping);
/* Put back any errors cleared by filemap_fdatawait()
so they can be caught by someone who can pass them
}
+static void gfs2_page_writeback(struct gfs2_glock *gl)
+{
+ struct gfs2_inode *ip = gl->gl_object;
+ struct inode *inode = &ip->i_inode;
+ struct address_space *mapping = inode->i_mapping;
+
+ if (!S_ISREG(ip->i_di.di_mode))
+ return;
+
+ filemap_fdatawrite(mapping);
+}
+
/**
* meta_go_sync - sync out the metadata for this glock
* @gl: the glock
if (test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) {
gfs2_log_flush(gl->gl_sbd, gl);
- gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
+ gfs2_meta_sync(gl);
if (flags & DIO_RELEASE)
gfs2_ail_empty_gl(gl);
}
- clear_bit(GLF_SYNC, &gl->gl_flags);
}
/**
if (gl->gl_state != LM_ST_UNLOCKED &&
(!gh || !(gh->gh_flags & GL_SKIP))) {
- error = gfs2_meta_read(gl, gl->gl_name.ln_number, DIO_START,
- &bh);
+ error = gfs2_meta_read(gl, gl->gl_name.ln_number, 0, &bh);
if (!error)
brelse(bh);
}
if (test_bit(GLF_DIRTY, &gl->gl_flags)) {
if (meta && data) {
- gfs2_page_sync(gl, flags | DIO_START);
+ gfs2_page_writeback(gl);
gfs2_log_flush(gl->gl_sbd, gl);
- gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
- gfs2_page_sync(gl, flags | DIO_WAIT);
+ gfs2_meta_sync(gl);
+ gfs2_page_wait(gl);
clear_bit(GLF_DIRTY, &gl->gl_flags);
} else if (meta) {
gfs2_log_flush(gl->gl_sbd, gl);
- gfs2_meta_sync(gl, flags | DIO_START | DIO_WAIT);
- } else if (data)
- gfs2_page_sync(gl, flags | DIO_START | DIO_WAIT);
+ gfs2_meta_sync(gl);
+ } else if (data) {
+ gfs2_page_writeback(gl);
+ gfs2_page_wait(gl);
+ }
if (flags & DIO_RELEASE)
gfs2_ail_empty_gl(gl);
}
-
- clear_bit(GLF_SYNC, &gl->gl_flags);
}
/**
struct gfs2_glock *gl = gh->gh_gl;
struct gfs2_inode *ip = gl->gl_object;
- if (ip) {
- if (test_bit(GLF_DIRTY, &gl->gl_flags))
- gfs2_inode_attr_in(ip);
-
- gfs2_meta_cache_flush(ip);
- }
+ if (ip == NULL)
+ return;
+ if (test_bit(GLF_DIRTY, &gl->gl_flags))
+ gfs2_inode_attr_in(ip);
+ gfs2_meta_cache_flush(ip);
}
/**
return !atomic_read(&gl->gl_lvb_count);
}
-struct gfs2_glock_operations gfs2_meta_glops = {
+const struct gfs2_glock_operations gfs2_meta_glops = {
.go_xmote_th = gfs2_glock_xmote_th,
.go_drop_th = gfs2_glock_drop_th,
- .go_type = LM_TYPE_META
+ .go_type = LM_TYPE_META,
};
-struct gfs2_glock_operations gfs2_inode_glops = {
+const struct gfs2_glock_operations gfs2_inode_glops = {
.go_xmote_th = inode_go_xmote_th,
.go_xmote_bh = inode_go_xmote_bh,
.go_drop_th = inode_go_drop_th,
.go_lock = inode_go_lock,
.go_unlock = inode_go_unlock,
.go_greedy = inode_greedy,
- .go_type = LM_TYPE_INODE
+ .go_type = LM_TYPE_INODE,
};
-struct gfs2_glock_operations gfs2_rgrp_glops = {
+const struct gfs2_glock_operations gfs2_rgrp_glops = {
.go_xmote_th = gfs2_glock_xmote_th,
.go_drop_th = gfs2_glock_drop_th,
.go_sync = meta_go_sync,
.go_demote_ok = rgrp_go_demote_ok,
.go_lock = rgrp_go_lock,
.go_unlock = rgrp_go_unlock,
- .go_type = LM_TYPE_RGRP
+ .go_type = LM_TYPE_RGRP,
};
-struct gfs2_glock_operations gfs2_trans_glops = {
+const struct gfs2_glock_operations gfs2_trans_glops = {
.go_xmote_th = trans_go_xmote_th,
.go_xmote_bh = trans_go_xmote_bh,
.go_drop_th = trans_go_drop_th,
- .go_type = LM_TYPE_NONDISK
+ .go_type = LM_TYPE_NONDISK,
};
-struct gfs2_glock_operations gfs2_iopen_glops = {
+const struct gfs2_glock_operations gfs2_iopen_glops = {
.go_xmote_th = gfs2_glock_xmote_th,
.go_drop_th = gfs2_glock_drop_th,
- .go_callback = gfs2_iopen_go_callback,
- .go_type = LM_TYPE_IOPEN
+ .go_type = LM_TYPE_IOPEN,
};
-struct gfs2_glock_operations gfs2_flock_glops = {
+const struct gfs2_glock_operations gfs2_flock_glops = {
.go_xmote_th = gfs2_glock_xmote_th,
.go_drop_th = gfs2_glock_drop_th,
- .go_type = LM_TYPE_FLOCK
+ .go_type = LM_TYPE_FLOCK,
};
-struct gfs2_glock_operations gfs2_nondisk_glops = {
+const struct gfs2_glock_operations gfs2_nondisk_glops = {
.go_xmote_th = gfs2_glock_xmote_th,
.go_drop_th = gfs2_glock_drop_th,
- .go_type = LM_TYPE_NONDISK
+ .go_type = LM_TYPE_NONDISK,
};
-struct gfs2_glock_operations gfs2_quota_glops = {
+const struct gfs2_glock_operations gfs2_quota_glops = {
.go_xmote_th = gfs2_glock_xmote_th,
.go_drop_th = gfs2_glock_drop_th,
.go_demote_ok = quota_go_demote_ok,
- .go_type = LM_TYPE_QUOTA
+ .go_type = LM_TYPE_QUOTA,
};
-struct gfs2_glock_operations gfs2_journal_glops = {
+const struct gfs2_glock_operations gfs2_journal_glops = {
.go_xmote_th = gfs2_glock_xmote_th,
.go_drop_th = gfs2_glock_drop_th,
- .go_type = LM_TYPE_JOURNAL
+ .go_type = LM_TYPE_JOURNAL,
};
projects / linux-2.6 / blobdiff