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authorOleg Nesterov <oleg@redhat.com>2015-07-20 00:48:20 +0300
committerOleg Nesterov <oleg@redhat.com>2015-08-15 14:52:08 +0300
commitbee9182d955227f01ff3b80c4cb6acca9bb40b11 (patch)
tree3237b122991b6f44913f47561e52c344d7725fb1 /fs/btrfs
parent45e38cff4fce8d6871b5fa5e734e4dc9814d6056 (diff)
downloadlinux-bee9182d955227f01ff3b80c4cb6acca9bb40b11.tar.xz
introduce __sb_writers_{acquired,release}() helpers
Preparation to hide the sb->s_writers internals from xfs and btrfs. Add 2 trivial define's they can use rather than play with ->s_writers directly. No changes in btrfs/transaction.o and xfs/xfs_aops.o. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Jan Kara <jack@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/transaction.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index f5021fcb154e..a8ab8f5ef38e 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1638,9 +1638,7 @@ static void do_async_commit(struct work_struct *work)
* Tell lockdep about it.
*/
if (ac->newtrans->type & __TRANS_FREEZABLE)
- rwsem_acquire_read(
- &ac->root->fs_info->sb->s_writers.lock_map[SB_FREEZE_FS-1],
- 0, 1, _THIS_IP_);
+ __sb_writers_acquired(ac->root->fs_info->sb, SB_FREEZE_FS);
current->journal_info = ac->newtrans;
@@ -1679,9 +1677,7 @@ int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans,
* async commit thread will be the one to unlock it.
*/
if (ac->newtrans->type & __TRANS_FREEZABLE)
- rwsem_release(
- &root->fs_info->sb->s_writers.lock_map[SB_FREEZE_FS-1],
- 1, _THIS_IP_);
+ __sb_writers_release(root->fs_info->sb, SB_FREEZE_FS);
schedule_work(&ac->work);