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nilfs2: move recovery completion into load_nilfs function

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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>
This commit is contained in:
Ryusuke Konishi 2009-11-19 16:58:40 +09:00
parent 050b4142c9
commit f50a4c8149
2 changed files with 53 additions and 56 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
fs/nilfs2/super.c
View file

@ -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);

70
fs/nilfs2/the_nilfs.c
View file

@ -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);