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| author | Bob Peterson <rpeterso@redhat.com> | 2011-03-17 16:19:58 -0400 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2011-04-18 15:23:50 +0100 |
| commit | 44ad37d69b2cc421d5b5c7ad7fed16230685b092 (patch) | |
| tree | 3632c63eef9e159947316f18d48054f082c0578e /fs/gfs2/ops_fstype.c | |
| parent | 001e8e8df4283dd4ef7a0297c012fce364c05cf1 (diff) | |
| download | kernel_samsung_smdk4412-44ad37d69b2cc421d5b5c7ad7fed16230685b092.zip kernel_samsung_smdk4412-44ad37d69b2cc421d5b5c7ad7fed16230685b092.tar.gz kernel_samsung_smdk4412-44ad37d69b2cc421d5b5c7ad7fed16230685b092.tar.bz2 | |
GFS2: filesystem hang caused by incorrect lock order
This patch fixes a deadlock in GFS2 where two processes are trying
to reclaim an unlinked dinode:
One holds the inode glock and calls gfs2_lookup_by_inum trying to look
up the inode, which it can't, due to I_FREEING. The other has set
I_FREEING from vfs and is at the beginning of gfs2_delete_inode
waiting for the glock, which is held by the first. The solution is to
add a new non_block parameter to the gfs2_iget function that causes it
to return -ENOENT if the inode is being freed.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/ops_fstype.c')
| -rw-r--r-- | fs/gfs2/ops_fstype.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 42ef243..d3c69eb 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -430,7 +430,7 @@ static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, struct dentry *dentry; struct inode *inode; - inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0); + inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, 0); if (IS_ERR(inode)) { fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); return PTR_ERR(inode); |