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authorAndreas Gruenbacher <agruenba@redhat.com>2018-05-31 15:20:55 +0300
committerBob Peterson <rpeterso@redhat.com>2018-06-04 15:33:17 +0300
commit7b5747f43f4dd8dce57e686ca4372825bd67c258 (patch)
treec8c39b17301ea54c80aa5faeed83b3bf501299c2 /fs/gfs2/aops.c
parent07e23d68f6eae20457cbd6d20175492b61b9f844 (diff)
downloadlinux-7b5747f43f4dd8dce57e686ca4372825bd67c258.tar.xz
GFS2: Fix allocation error bug with recursive rgrp glocking
Before this patch function gfs2_write_begin, upon discovering an error, called gfs2_trim_blocks while the rgrp glock was still held. That's because gfs2_inplace_release is not called until later. This patch reorganizes the logic a bit so gfs2_inplace_release is called to release the lock prior to the call to gfs2_trim_blocks, thus preventing the glock recursion. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/aops.c')
-rw-r--r--fs/gfs2/aops.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index f58716567972..66e7172e0134 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -747,18 +747,21 @@ out:
put_page(page);
gfs2_trans_end(sdp);
- if (pos + len > ip->i_inode.i_size)
- gfs2_trim_blocks(&ip->i_inode);
- goto out_trans_fail;
+ if (alloc_required) {
+ gfs2_inplace_release(ip);
+ if (pos + len > ip->i_inode.i_size)
+ gfs2_trim_blocks(&ip->i_inode);
+ }
+ goto out_qunlock;
out_endtrans:
gfs2_trans_end(sdp);
out_trans_fail:
- if (alloc_required) {
+ if (alloc_required)
gfs2_inplace_release(ip);
out_qunlock:
+ if (alloc_required)
gfs2_quota_unlock(ip);
- }
out_unlock:
if (&ip->i_inode == sdp->sd_rindex) {
gfs2_glock_dq(&m_ip->i_gh);