/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/gfs2_ondisk.h>
-#include <asm/semaphore.h>
+#include <linux/crc32.h>
#include "gfs2.h"
#include "lm_interface.h"
#include "log.h"
#include "mount.h"
#include "ops_super.h"
-#include "page.h"
#include "quota.h"
#include "recovery.h"
#include "rgrp.h"
#include "super.h"
#include "sys.h"
#include "util.h"
+#include "trans.h"
+#include "dir.h"
+#include "eattr.h"
+#include "bmap.h"
/**
* gfs2_write_inode - Make sure the inode is stable on the disk
static int gfs2_write_inode(struct inode *inode, int sync)
{
- struct gfs2_inode *ip = inode->u.generic_ip;
-
- if (current->flags & PF_MEMALLOC)
- return 0;
- if (ip && sync)
- gfs2_log_flush_glock(ip->i_gl);
+ struct gfs2_inode *ip = GFS2_I(inode);
+
+ /* Check this is a "normal" inode */
+ if (inode->u.generic_ip) {
+ if (current->flags & PF_MEMALLOC)
+ return 0;
+ if (sync)
+ gfs2_log_flush(GFS2_SB(inode), ip->i_gl);
+ }
return 0;
}
if (!sdp)
return;
+ if (!strncmp(sb->s_type->name, "gfs2meta", 8))
+ return; /* meta fs. don't do nothin' */
+
/* Unfreeze the filesystem, if we need to */
mutex_lock(&sdp->sd_freeze_lock);
gfs2_glock_dq_uninit(&sdp->sd_freeze_gh);
mutex_unlock(&sdp->sd_freeze_lock);
- kthread_stop(sdp->sd_inoded_process);
kthread_stop(sdp->sd_quotad_process);
kthread_stop(sdp->sd_logd_process);
kthread_stop(sdp->sd_recoverd_process);
if (error)
gfs2_io_error(sdp);
}
-
/* At this point, we're through modifying the disk */
/* Release stuff */
gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
gfs2_glock_dq_uninit(&sdp->sd_ir_gh);
gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
- gfs2_glock_dq_uninit(&sdp->sd_ut_gh);
gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
iput(sdp->sd_ir_inode);
iput(sdp->sd_sc_inode);
- iput(sdp->sd_ut_inode);
iput(sdp->sd_qc_inode);
}
gfs2_glock_dq_uninit(&sdp->sd_live_gh);
-
gfs2_clear_rgrpd(sdp);
gfs2_jindex_free(sdp);
-
/* Take apart glock structures and buffer lists */
gfs2_gl_hash_clear(sdp, WAIT);
-
/* Unmount the locking protocol */
gfs2_lm_unmount(sdp);
/* At this point, we're through participating in the lockspace */
-
gfs2_sys_fs_del(sdp);
-
- /* Get rid of any extra inodes */
- while (invalidate_inodes(sb))
- yield();
-
vfree(sdp);
-
sb->s_fs_info = NULL;
}
* @sb: the filesystem
*
* This function is called every time sync(2) is called.
- * After this exits, all dirty buffers and synced.
+ * After this exits, all dirty buffers are synced.
*/
static void gfs2_write_super(struct super_block *sb)
{
struct gfs2_sbd *sdp = sb->s_fs_info;
- gfs2_log_flush(sdp);
+ gfs2_log_flush(sdp, NULL);
}
/**
* Returns: 0 on success or error code
*/
-static int gfs2_statfs(struct super_block *sb, struct kstatfs *buf)
+static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf)
{
+ struct super_block *sb = dentry->d_inode->i_sb;
struct gfs2_sbd *sdp = sb->s_fs_info;
struct gfs2_statfs_change sc;
int error;
if (error)
return error;
- memset(buf, 0, sizeof(struct kstatfs));
-
buf->f_type = GFS2_MAGIC;
buf->f_bsize = sdp->sd_sb.sb_bsize;
buf->f_blocks = sc.sc_total;
static void gfs2_clear_inode(struct inode *inode)
{
- struct gfs2_inode *ip = inode->u.generic_ip;
-
- if (ip) {
- spin_lock(&ip->i_spin);
- ip->i_vnode = NULL;
- inode->u.generic_ip = NULL;
- spin_unlock(&ip->i_spin);
-
+ /* This tells us its a "real" inode and not one which only
+ * serves to contain an address space (see rgrp.c, meta_io.c)
+ * which therefore doesn't have its own glocks.
+ */
+ if (inode->u.generic_ip) {
+ struct gfs2_inode *ip = GFS2_I(inode);
+ gfs2_glock_inode_squish(inode);
+ gfs2_assert(inode->i_sb->s_fs_info, ip->i_gl->gl_state == LM_ST_UNLOCKED);
+ ip->i_gl->gl_object = NULL;
gfs2_glock_schedule_for_reclaim(ip->i_gl);
- gfs2_inode_put(ip);
+ gfs2_glock_put(ip->i_gl);
+ ip->i_gl = NULL;
+ if (ip->i_iopen_gh.gh_gl)
+ gfs2_glock_dq_uninit(&ip->i_iopen_gh);
}
}
return 0;
}
+/*
+ * We have to (at the moment) hold the inodes main lock to cover
+ * the gap between unlocking the shared lock on the iopen lock and
+ * taking the exclusive lock. I'd rather do a shared -> exclusive
+ * conversion on the iopen lock, but we can change that later. This
+ * is safe, just less efficient.
+ */
+static void gfs2_delete_inode(struct inode *inode)
+{
+ struct gfs2_sbd *sdp = inode->i_sb->s_fs_info;
+ struct gfs2_inode *ip = GFS2_I(inode);
+ struct gfs2_holder gh;
+ int error;
+
+ if (!inode->u.generic_ip)
+ goto out;
+
+ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &gh);
+ if (unlikely(error)) {
+ gfs2_glock_dq_uninit(&ip->i_iopen_gh);
+ goto out;
+ }
+
+ gfs2_glock_dq(&ip->i_iopen_gh);
+ gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &ip->i_iopen_gh);
+ error = gfs2_glock_nq(&ip->i_iopen_gh);
+ if (error)
+ goto out_uninit;
+
+ if (S_ISDIR(ip->i_di.di_mode) &&
+ (ip->i_di.di_flags & GFS2_DIF_EXHASH)) {
+ error = gfs2_dir_exhash_dealloc(ip);
+ if (error)
+ goto out_unlock;
+ }
+
+ if (ip->i_di.di_eattr) {
+ error = gfs2_ea_dealloc(ip);
+ if (error)
+ goto out_unlock;
+ }
+
+ if (!gfs2_is_stuffed(ip)) {
+ error = gfs2_file_dealloc(ip);
+ if (error)
+ goto out_unlock;
+ }
+
+ error = gfs2_dinode_dealloc(ip);
+
+out_unlock:
+ gfs2_glock_dq(&ip->i_iopen_gh);
+out_uninit:
+ gfs2_holder_uninit(&ip->i_iopen_gh);
+ gfs2_glock_dq_uninit(&gh);
+ if (error)
+ fs_warn(sdp, "gfs2_delete_inode: %d\n", error);
+out:
+ truncate_inode_pages(&inode->i_data, 0);
+ clear_inode(inode);
+}
+
+
+
+static struct inode *gfs2_alloc_inode(struct super_block *sb)
+{
+ struct gfs2_sbd *sdp = sb->s_fs_info;
+ struct gfs2_inode *ip;
+
+ ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL);
+ if (ip) {
+ ip->i_flags = 0;
+ ip->i_gl = NULL;
+ ip->i_greedy = gfs2_tune_get(sdp, gt_greedy_default);
+ ip->i_last_pfault = jiffies;
+ }
+ return &ip->i_inode;
+}
+
+static void gfs2_destroy_inode(struct inode *inode)
+{
+ kmem_cache_free(gfs2_inode_cachep, inode);
+}
+
struct super_operations gfs2_super_ops = {
+ .alloc_inode = gfs2_alloc_inode,
+ .destroy_inode = gfs2_destroy_inode,
.write_inode = gfs2_write_inode,
+ .delete_inode = gfs2_delete_inode,
.put_super = gfs2_put_super,
.write_super = gfs2_write_super,
.write_super_lockfs = gfs2_write_super_lockfs,
projects / linux-2.6 / blobdiff