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| author | Kamal Dasu <kdasu.kdev@gmail.com> | 2012-02-23 04:41:39 +0400 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-03-23 00:31:06 +0400 |
| commit | 5575acc7807595687288b3bbac15103f2a5462e1 (patch) | |
| tree | 1a47a34756e1c0023e2df8f3b1d9e10de568601a /fs/xfs/xfs_bmap.c | |
| parent | 1c2ccc66bcef992bec7bad6d52cade66d632d7fb (diff) | |
| download | linux-5575acc7807595687288b3bbac15103f2a5462e1.tar.xz | |
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_bmap.c')
| -rw-r--r-- | fs/xfs/xfs_bmap.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 3548c6f75593..85e7e327bcd8 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -5124,6 +5124,15 @@ xfs_bunmapi( cur->bc_private.b.flags = 0; } else cur = NULL; + + if (isrt) { + /* + * Synchronize by locking the bitmap inode. + */ + xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL); + xfs_trans_ijoin(tp, mp->m_rbmip, XFS_ILOCK_EXCL); + } + extno = 0; while (bno != (xfs_fileoff_t)-1 && bno >= start && lastx >= 0 && (nexts == 0 || extno < nexts)) { |