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| author |   Kamal Dasu <kdasu.kdev@gmail.com> | 2012-02-23 00:41:39 +0000 |
|---|---|---|
| committer |   Ben Myers <bpm@sgi.com> | 2012-03-22 15:31:06 -0500 |
| commit | 5575acc7807595687288b3bbac15103f2a5462e1 (patch) | |
| tree | 1a47a34756e1c0023e2df8f3b1d9e10de568601a /fs/xfs/xfs_rtalloc.c | |
| parent | fs: xfs: fix section mismatch in linux-next (diff) | |
| download | linux-dev-5575acc7807595687288b3bbac15103f2a5462e1.tar.xz linux-dev-5575acc7807595687288b3bbac15103f2a5462e1.zip | |
xfs: fix deadlock in xfs_rtfree_extent
To fix the deadlock caused by repeatedly calling xfs_rtfree_extent
- removed xfs_ilock() and xfs_trans_ijoin() from xfs_rtfree_extent(),
instead added asserts that the inode is locked and has an inode_item
attached to it.
- in xfs_bunmapi() when dealing with an inode with the rt flag
call xfs_ilock() and xfs_trans_ijoin() so that the
reference count is bumped on the inode and attached it to the
transaction before calling into xfs_bmap_del_extent, similar to
what we do in xfs_bmap_rtalloc.
Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_rtalloc.c')
| -rw-r--r-- | fs/xfs/xfs_rtalloc.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 87323f1ded64..ca4f31534a0a 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -183,6 +183,7 @@ error_cancel: oblocks = map.br_startoff + map.br_blockcount; } return 0; + error: return error; } @@ -2139,11 +2140,9 @@ xfs_rtfree_extent( xfs_buf_t *sumbp; /* summary file block buffer */ mp = tp->t_mountp; - /* - * Synchronize by locking the bitmap inode. - */ - xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, mp->m_rbmip, XFS_ILOCK_EXCL); + + ASSERT(mp->m_rbmip->i_itemp != NULL); + ASSERT(xfs_isilocked(mp->m_rbmip, XFS_ILOCK_EXCL)); #if defined(__KERNEL__) && defined(DEBUG) /* |