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authorChristoph Hellwig <hch@infradead.org>2011-09-19 15:00:54 +0000
committerAlex Elder <aelder@sgi.com>2011-10-11 21:15:08 -0500
commitddc3415aba1cb2f86d1fcad720cea834ee178f54 (patch)
tree7a31a932ce0b7080557be062ccc7c3c0e181b140 /fs/xfs/xfs_trans_inode.c
parent23bb0be1a237c8732ce1a43140e5cb103a676b92 (diff)
downloadlinux-ddc3415aba1cb2f86d1fcad720cea834ee178f54.tar.bz2
xfs: simplify xfs_trans_ijoin* again
There is no reason to keep a reference to the inode even if we unlock it during transaction commit because we never drop a reference between the ijoin and commit. Also use this fact to merge xfs_trans_ijoin_ref back into xfs_trans_ijoin - the third argument decides if an unlock is needed now. I'm actually starting to wonder if allowing inodes to be unlocked at transaction commit really is worth the effort. The only real benefit is that they can be unlocked earlier when commiting a synchronous transactions, but that could be solved by doing the log force manually after the unlock, too. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_trans_inode.c')
-rw-r--r--fs/xfs/xfs_trans_inode.c25
1 files changed, 5 insertions, 20 deletions
diff --git a/fs/xfs/xfs_trans_inode.c b/fs/xfs/xfs_trans_inode.c
index c8dea2fd7e68..32f0288ae10f 100644
--- a/fs/xfs/xfs_trans_inode.c
+++ b/fs/xfs/xfs_trans_inode.c
@@ -47,11 +47,13 @@ xfs_trans_inode_broot_debug(
* Add a locked inode to the transaction.
*
* The inode must be locked, and it cannot be associated with any transaction.
+ * If lock_flags is non-zero the inode will be unlocked on transaction commit.
*/
void
xfs_trans_ijoin(
struct xfs_trans *tp,
- struct xfs_inode *ip)
+ struct xfs_inode *ip,
+ uint lock_flags)
{
xfs_inode_log_item_t *iip;
@@ -59,7 +61,9 @@ xfs_trans_ijoin(
if (ip->i_itemp == NULL)
xfs_inode_item_init(ip, ip->i_mount);
iip = ip->i_itemp;
+
ASSERT(iip->ili_lock_flags == 0);
+ iip->ili_lock_flags = lock_flags;
/*
* Get a log_item_desc to point at the new item.
@@ -70,25 +74,6 @@ xfs_trans_ijoin(
}
/*
- * Add a locked inode to the transaction.
- *
- *
- * Grabs a reference to the inode which will be dropped when the transaction
- * is committed. The inode will also be unlocked at that point. The inode
- * must be locked, and it cannot be associated with any transaction.
- */
-void
-xfs_trans_ijoin_ref(
- struct xfs_trans *tp,
- struct xfs_inode *ip,
- uint lock_flags)
-{
- xfs_trans_ijoin(tp, ip);
- IHOLD(ip);
- ip->i_itemp->ili_lock_flags = lock_flags;
-}
-
-/*
* Transactional inode timestamp update. Requires the inode to be locked and
* joined to the transaction supplied. Relies on the transaction subsystem to
* track dirty state and update/writeback the inode accordingly.