diff options
Diffstat (limited to 'fs/super.c')
| -rw-r--r-- | fs/super.c | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/fs/super.c b/fs/super.c index bd9eea4bb2bb..9674ab2c8718 100644 --- a/fs/super.c +++ b/fs/super.c @@ -363,10 +363,10 @@ EXPORT_SYMBOL(drop_super); */ void sync_supers(void) { - struct super_block *sb, *n; + struct super_block *sb, *p = NULL; spin_lock(&sb_lock); - list_for_each_entry_safe(sb, n, &super_blocks, s_list) { + list_for_each_entry(sb, &super_blocks, s_list) { if (list_empty(&sb->s_instances)) continue; if (sb->s_op->write_super && sb->s_dirt) { @@ -379,11 +379,13 @@ void sync_supers(void) up_read(&sb->s_umount); spin_lock(&sb_lock); - /* lock was dropped, must reset next */ - list_safe_reset_next(sb, n, s_list); - __put_super(sb); + if (p) + __put_super(p); + p = sb; } } + if (p) + __put_super(p); spin_unlock(&sb_lock); } @@ -397,10 +399,10 @@ void sync_supers(void) */ void iterate_supers(void (*f)(struct super_block *, void *), void *arg) { - struct super_block *sb, *n; + struct super_block *sb, *p = NULL; spin_lock(&sb_lock); - list_for_each_entry_safe(sb, n, &super_blocks, s_list) { + list_for_each_entry(sb, &super_blocks, s_list) { if (list_empty(&sb->s_instances)) continue; sb->s_count++; @@ -412,10 +414,12 @@ void iterate_supers(void (*f)(struct super_block *, void *), void *arg) up_read(&sb->s_umount); spin_lock(&sb_lock); - /* lock was dropped, must reset next */ - list_safe_reset_next(sb, n, s_list); - __put_super(sb); + if (p) + __put_super(p); + p = sb; } + if (p) + __put_super(p); spin_unlock(&sb_lock); } @@ -577,10 +581,10 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force) static void do_emergency_remount(struct work_struct *work) { - struct super_block *sb, *n; + struct super_block *sb, *p = NULL; spin_lock(&sb_lock); - list_for_each_entry_safe(sb, n, &super_blocks, s_list) { + list_for_each_entry(sb, &super_blocks, s_list) { if (list_empty(&sb->s_instances)) continue; sb->s_count++; @@ -594,10 +598,12 @@ static void do_emergency_remount(struct work_struct *work) } up_write(&sb->s_umount); spin_lock(&sb_lock); - /* lock was dropped, must reset next */ - list_safe_reset_next(sb, n, s_list); - __put_super(sb); + if (p) + __put_super(p); + p = sb; } + if (p) + __put_super(p); spin_unlock(&sb_lock); kfree(work); printk("Emergency Remount complete\n"); |