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xfs: simplify inode to transaction joining

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Currently we need to either call IHOLD or xfs_trans_ihold on an inode when
joining it to a transaction via xfs_trans_ijoin.

This patches instead makes xfs_trans_ijoin usable on it's own by doing
an implicity xfs_trans_ihold, which also allows us to drop the third
argument.  For the case where we want to hold a reference on the inode
a xfs_trans_ijoin_ref wrapper is added which does the IHOLD and marks
the inode for needing an xfs_iput.  In addition to the cleaner interface
to the caller this also simplifies the implementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Christoph Hellwig
2010-06-24 11:36:58 +10:00
committed by Alex Elder
parent 4d16e9246f
commit 898621d5a7
19 changed files with 103 additions and 247 deletions
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4
fs/xfs/xfs_utils.c
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@@ -374,8 +374,8 @@ xfs_truncate_file(
* of references will stay constant.
*/
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_ijoin(tp, ip);
/*
* Signal a sync xaction. The only case where that isn't
* the case is if we're truncating an already unlinked file