From: Bob Peterson rpeterso@redhat.com
[ Upstream commit 9d9b16054b7d357afde69a027514c695092b0d22 ]
We must not call gfs2_consist (which does a file system withdraw) from the freeze glock's freeze_go_xmote_bh function because the withdraw will try to use the freeze glock, thus causing a glock recursion error.
This patch changes freeze_go_xmote_bh to call function gfs2_assert_withdraw_delayed instead of gfs2_consist to avoid recursion.
Signed-off-by: Bob Peterson rpeterso@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/gfs2/glops.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-)
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 54d3fbeb3002..384565d63eea 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -610,16 +610,13 @@ static int freeze_go_xmote_bh(struct gfs2_glock *gl) j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
error = gfs2_find_jhead(sdp->sd_jdesc, &head, false); - if (error) - gfs2_consist(sdp); - if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) - gfs2_consist(sdp); - - /* Initialize some head of the log stuff */ - if (!gfs2_withdrawn(sdp)) { - sdp->sd_log_sequence = head.lh_sequence + 1; - gfs2_log_pointers_init(sdp, head.lh_blkno); - } + if (gfs2_assert_withdraw_delayed(sdp, !error)) + return error; + if (gfs2_assert_withdraw_delayed(sdp, head.lh_flags & + GFS2_LOG_HEAD_UNMOUNT)) + return -EIO; + sdp->sd_log_sequence = head.lh_sequence + 1; + gfs2_log_pointers_init(sdp, head.lh_blkno); } return 0; }