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authorBob Peterson <rpeterso@redhat.com>2007-08-22 11:15:29 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2007-10-10 08:55:43 +0100
commitec217e0ece60f2240772e6f08e0529775846c627 (patch)
tree2b06b31dbb9165cf086580fe589249e8a54313c2 /fs/gfs2/lops.c
parenta947e0335699a1d387c3826e5b8eff9e0afe505e (diff)
downloadlinux-ec217e0ece60f2240772e6f08e0529775846c627.tar.bz2
[GFS2] Patch to protect sd_log_num_jdata
This is a patch to GFS2 to protect sd_log_num_jdata with the gfs2_log_lock. Without this patch, there is a timing window where you can get hit the following assert from function gfs2_log_flush(): gfs2_assert_withdraw(sdp, sdp->sd_log_num_buf + sdp->sd_log_num_jdata == sdp->sd_log_commited_buf + sdp->sd_log_commited_databuf); I've tested it on my roth cluster and it fixes the problem. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/lops.c')
-rw-r--r--fs/gfs2/lops.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index a0371f835cfb..7ef335623373 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -492,11 +492,12 @@ static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
gfs2_trans_add_gl(bd->bd_gl);
if (gfs2_is_jdata(ip)) {
- sdp->sd_log_num_jdata++;
gfs2_pin(sdp, bd->bd_bh);
tr->tr_num_databuf_new++;
}
gfs2_log_lock(sdp);
+ if (gfs2_is_jdata(ip))
+ sdp->sd_log_num_jdata++;
sdp->sd_log_num_databuf++;
list_add(&le->le_list, &sdp->sd_log_le_databuf);
gfs2_log_unlock(sdp);