[PATCH 5.2 263/313] gfs2: clear buf_in_tr when ending a transaction in sweep_bh_for_rgrps

[Greg Kroah-Hartman]

From: Bob Peterson <rpete...@redhat.com>

commit f0b444b349e33ae0d3dd93e25ca365482a5d17d4 upstream.

In function sweep_bh_for_rgrps, which is a helper for punch_hole,
it uses variable buf_in_tr to keep track of when it needs to commit
pending block frees on a partial delete that overflows the
transaction created for the delete. The problem is that the
variable was initialized at the start of function sweep_bh_for_rgrps
but it was never cleared, even when starting a new transaction.

This patch reinitializes the variable when the transaction is
ended, so the next transaction starts out with it cleared.

Fixes: d552a2b9b33e ("GFS2: Non-recursive delete")
Cc: sta...@vger.kernel.org # v4.12+
Signed-off-by: Bob Peterson <rpete...@redhat.com>
Signed-off-by: Andreas Gruenbacher <agrue...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 fs/gfs2/bmap.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -1670,6 +1670,7 @@ out_unlock:
                        brelse(dibh);
                        up_write(&ip->i_rw_mutex);
                        gfs2_trans_end(sdp);
+                       buf_in_tr = false;
                }
                gfs2_glock_dq_uninit(rd_gh);
                cond_resched();