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authorBob Peterson <rpeterso@redhat.com>2012-02-17 09:15:52 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2012-02-28 09:48:30 +0000
commit9e73f571ea3afffca78c1f54128d57796e27532f (patch)
tree65210fa95c01ca3c6b44a92bea2068887e6a7fcf
parent718b97bd6b03445be53098e3c8f896aeebc304aa (diff)
GFS2: Ensure rindex is uptodate for fallocate
This patch fixes a problem whereby gfs2_grow was failing and causing GFS2 to assert. The problem was that when GFS2's fallocate operation tried to acquire an "allocation" it made sure the rindex was up to date, and if not, it called gfs2_rindex_update. However, if the file being fallocated was the rindex itself, it was already locked at that point. By calling gfs2_rindex_update at an earlier point in time, we bring rindex up to date and thereby avoid trying to lock it when the "allocation" is acquired. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
-rw-r--r--fs/gfs2/file.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index c5fb3597f69..7f906c8b02a 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -772,6 +772,11 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
if (bytes == 0)
bytes = sdp->sd_sb.sb_bsize;
+ error = gfs2_rindex_update(sdp);
+ if (error) {
+ fs_warn(sdp, "rindex update returns %d\n", error);
+ return error;
+ }
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &ip->i_gh);
error = gfs2_glock_nq(&ip->i_gh);
if (unlikely(error))