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authorAndreas Gruenbacher <agruenba@redhat.com>2021-02-09 18:32:32 +0100
committerAndreas Gruenbacher <agruenba@redhat.com>2021-02-10 09:51:06 +0100
commit7009fa9cd9a5262944b30eb7efb1f0561d074b68 (patch)
tree1365088f922801b04d00c9948ec15f55ee59ba0f /fs/gfs2
parent866eef48d80234e1ea3a2f78b54afc563be3ea4a (diff)
gfs2: Recursive gfs2_quota_hold in gfs2_iomap_end
When starting an iomap write, gfs2_quota_lock_check -> gfs2_quota_lock -> gfs2_quota_hold is called from gfs2_iomap_begin. At the end of the write, before unlocking the quotas, punch_hole -> gfs2_quota_hold can be called again in gfs2_iomap_end, which is incorrect and leads to a failed assertion. Instead, move the call to gfs2_quota_unlock before the call to punch_hole to fix that. Fixes: 64bc06bb32ee ("gfs2: iomap buffered write support") Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/bmap.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 62d9081d1e26..a1f9dde33058 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -1230,6 +1230,9 @@ static int gfs2_iomap_end(struct inode *inode, loff_t pos, loff_t length,
gfs2_inplace_release(ip);
+ if (ip->i_qadata && ip->i_qadata->qa_qd_num)
+ gfs2_quota_unlock(ip);
+
if (length != written && (iomap->flags & IOMAP_F_NEW)) {
/* Deallocate blocks that were just allocated. */
loff_t blockmask = i_blocksize(inode) - 1;
@@ -1242,9 +1245,6 @@ static int gfs2_iomap_end(struct inode *inode, loff_t pos, loff_t length,
}
}
- if (ip->i_qadata && ip->i_qadata->qa_qd_num)
- gfs2_quota_unlock(ip);
-
if (unlikely(!written))
goto out_unlock;