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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-19 16:58:40 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-20 10:05:52 +0900
commitf50a4c8149cc135921a8a0476bff8e622f59aef9 (patch)
treeeba1d25b71d85daf34153ffc1b1e8eaf8b83cccc
parent050b4142c9f3cb3a213f254bd1a1fa1476800585 (diff)
nilfs2: move recovery completion into load_nilfs function
Although mount recovery of nilfs is integrated in load_nilfs() procedure, the completion of recovery was isolated from the procedure and performed at the end of the fill_super routine. This was somewhat confusing since the recovery is needed for the nilfs object, not for a super block instance. To resolve the inconsistency, this will integrate the recovery completion into load_nilfs(). Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
-rw-r--r--fs/nilfs2/super.c39
-rw-r--r--fs/nilfs2/the_nilfs.c70
2 files changed, 53 insertions, 56 deletions
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index f52616977ea0..990ead43a833 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -414,22 +414,6 @@ void nilfs_detach_checkpoint(struct nilfs_sb_info *sbi)
up_write(&nilfs->ns_super_sem);
}
-static int nilfs_mark_recovery_complete(struct nilfs_sb_info *sbi)
-{
- struct the_nilfs *nilfs = sbi->s_nilfs;
- int err = 0;
-
- down_write(&nilfs->ns_sem);
- if (!(nilfs->ns_mount_state & NILFS_VALID_FS)) {
- nilfs->ns_mount_state |= NILFS_VALID_FS;
- err = nilfs_commit_super(sbi, 1);
- if (likely(!err))
- printk(KERN_INFO "NILFS: recovery complete.\n");
- }
- up_write(&nilfs->ns_sem);
- return err;
-}
-
static int nilfs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
@@ -649,9 +633,7 @@ static int nilfs_setup_super(struct nilfs_sb_info *sbi)
int mnt_count = le16_to_cpu(sbp->s_mnt_count);
/* nilfs->sem must be locked by the caller. */
- if (!(nilfs->ns_mount_state & NILFS_VALID_FS)) {
- printk(KERN_WARNING "NILFS warning: mounting unchecked fs\n");
- } else if (nilfs->ns_mount_state & NILFS_ERROR_FS) {
+ if (nilfs->ns_mount_state & NILFS_ERROR_FS) {
printk(KERN_WARNING
"NILFS warning: mounting fs with errors\n");
#if 0
@@ -759,11 +741,10 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent,
sb->s_root = NULL;
sb->s_time_gran = 1;
- if (!nilfs_loaded(nilfs)) {
- err = load_nilfs(nilfs, sbi);
- if (err)
- goto failed_sbi;
- }
+ err = load_nilfs(nilfs, sbi);
+ if (err)
+ goto failed_sbi;
+
cno = nilfs_last_cno(nilfs);
if (sb->s_flags & MS_RDONLY) {
@@ -831,12 +812,6 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent,
up_write(&nilfs->ns_sem);
}
- err = nilfs_mark_recovery_complete(sbi);
- if (unlikely(err)) {
- printk(KERN_ERR "NILFS: recovery failed.\n");
- goto failed_root;
- }
-
down_write(&nilfs->ns_super_sem);
if (!nilfs_test_opt(sbi, SNAPSHOT))
nilfs->ns_current = sbi;
@@ -844,10 +819,6 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent,
return 0;
- failed_root:
- dput(sb->s_root);
- sb->s_root = NULL;
-
failed_segctor:
nilfs_detach_segment_constructor(sbi);
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 4d4d35c6fbef..aea2b58ba03b 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -262,28 +262,27 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
unsigned int s_flags = sbi->s_super->s_flags;
int really_read_only = bdev_read_only(nilfs->ns_bdev);
unsigned valid_fs;
- int err = 0;
+ int err;
- nilfs_init_recovery_info(&ri);
+ if (nilfs_loaded(nilfs))
+ return 0;
down_write(&nilfs->ns_sem);
valid_fs = (nilfs->ns_mount_state & NILFS_VALID_FS);
up_write(&nilfs->ns_sem);
- if (!valid_fs && (s_flags & MS_RDONLY)) {
- printk(KERN_INFO "NILFS: INFO: recovery "
- "required for readonly filesystem.\n");
- if (really_read_only) {
- printk(KERN_ERR "NILFS: write access "
- "unavailable, cannot proceed.\n");
- err = -EROFS;
- goto failed;
+ if (!valid_fs) {
+ printk(KERN_WARNING "NILFS warning: mounting unchecked fs\n");
+ if (s_flags & MS_RDONLY) {
+ printk(KERN_INFO "NILFS: INFO: recovery "
+ "required for readonly filesystem.\n");
+ printk(KERN_INFO "NILFS: write access will "
+ "be enabled during recovery.\n");
}
- printk(KERN_INFO "NILFS: write access will "
- "be enabled during recovery.\n");
- sbi->s_super->s_flags &= ~MS_RDONLY;
}
+ nilfs_init_recovery_info(&ri);
+
err = nilfs_search_super_root(nilfs, sbi, &ri);
if (unlikely(err)) {
printk(KERN_ERR "NILFS: error searching super root.\n");
@@ -296,19 +295,46 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
goto failed;
}
- if (!valid_fs) {
- err = nilfs_recover_logical_segments(nilfs, sbi, &ri);
- if (unlikely(err)) {
- nilfs_mdt_destroy(nilfs->ns_cpfile);
- nilfs_mdt_destroy(nilfs->ns_sufile);
- nilfs_mdt_destroy(nilfs->ns_dat);
- goto failed;
+ if (valid_fs)
+ goto skip_recovery;
+
+ if (s_flags & MS_RDONLY) {
+ if (really_read_only) {
+ printk(KERN_ERR "NILFS: write access "
+ "unavailable, cannot proceed.\n");
+ err = -EROFS;
+ goto failed_unload;
}
- if (ri.ri_need_recovery == NILFS_RECOVERY_SR_UPDATED)
- sbi->s_super->s_dirt = 1;
+ sbi->s_super->s_flags &= ~MS_RDONLY;
+ }
+
+ err = nilfs_recover_logical_segments(nilfs, sbi, &ri);
+ if (err)
+ goto failed_unload;
+
+ down_write(&nilfs->ns_sem);
+ nilfs->ns_mount_state |= NILFS_VALID_FS;
+ nilfs->ns_sbp[0]->s_state = cpu_to_le16(nilfs->ns_mount_state);
+ err = nilfs_commit_super(sbi, 1);
+ up_write(&nilfs->ns_sem);
+
+ if (err) {
+ printk(KERN_ERR "NILFS: failed to update super block. "
+ "recovery unfinished.\n");
+ goto failed_unload;
}
+ printk(KERN_INFO "NILFS: recovery complete.\n");
+ skip_recovery:
set_nilfs_loaded(nilfs);
+ nilfs_clear_recovery_info(&ri);
+ sbi->s_super->s_flags = s_flags;
+ return 0;
+
+ failed_unload:
+ nilfs_mdt_destroy(nilfs->ns_cpfile);
+ nilfs_mdt_destroy(nilfs->ns_sufile);
+ nilfs_mdt_destroy(nilfs->ns_dat);
failed:
nilfs_clear_recovery_info(&ri);