From 5575acc7807595687288b3bbac15103f2a5462e1 Mon Sep 17 00:00:00 2001 From: Kamal Dasu Date: Thu, 23 Feb 2012 00:41:39 +0000 Subject: 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 Reviewed-by: Christoph Hellwig Signed-off-by: Ben Myers --- fs/xfs/xfs_bmap.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'fs/xfs/xfs_bmap.c') diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 3548c6f7559..85e7e327bcd 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)) { -- cgit v1.2.3-70-g09d2