diff options
Diffstat (limited to 'fs/btrfs/block-group.c')
| -rw-r--r-- | fs/btrfs/block-group.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index 5322ef2ae015..08cdda47509f 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -1850,12 +1850,10 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) if (!btrfs_should_reclaim(fs_info)) return; - sb_start_write(fs_info->sb); + guard(super_write)(fs_info->sb); - if (!btrfs_exclop_start(fs_info, BTRFS_EXCLOP_BALANCE)) { - sb_end_write(fs_info->sb); + if (!btrfs_exclop_start(fs_info, BTRFS_EXCLOP_BALANCE)) return; - } /* * Long running balances can keep us blocked here for eternity, so @@ -1863,7 +1861,6 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) */ if (!mutex_trylock(&fs_info->reclaim_bgs_lock)) { btrfs_exclop_finish(fs_info); - sb_end_write(fs_info->sb); return; } @@ -1947,7 +1944,7 @@ void btrfs_reclaim_bgs_work(struct work_struct *work) /* * Get out fast, in case we're read-only or unmounting the * filesystem. It is OK to drop block groups from the list even - * for the read-only case. As we did sb_start_write(), + * for the read-only case. As we did take the super write lock, * "mount -o remount,ro" won't happen and read-only filesystem * means it is forced read-only due to a fatal error. So, it * never gets back to read-write to let us reclaim again. @@ -2030,7 +2027,6 @@ end: list_splice_tail(&retry_list, &fs_info->reclaim_bgs); spin_unlock(&fs_info->unused_bgs_lock); btrfs_exclop_finish(fs_info); - sb_end_write(fs_info->sb); } void btrfs_reclaim_bgs(struct btrfs_fs_info *fs_info) |