From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bob Peterson Date: Thu, 26 Mar 2020 13:40:16 -0500 Subject: [Cluster-devel] [GFS2 PATCH 1/5] gfs2: don't lock sd_log_flush_lock in try_rgrp_unlink In-Reply-To: <20200326184020.123544-1-rpeterso@redhat.com> References: <20200326184020.123544-1-rpeterso@redhat.com> Message-ID: <20200326184020.123544-2-rpeterso@redhat.com> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit In function try_rgrp_unlink, we added a temporary lock of the sd_log_flush_lock while searching the bitmaps. This protected us from problems in which dinodes being freed were still in a state of flux because the rgrp was in an active transaction. It was a kludge. Now that we've straightened out the code for inode eviction, deletes, and all the recovery mess, we no longer need this kludge. This patch removes it, and should improve performance. Signed-off-by: Bob Peterson --- fs/gfs2/rgrp.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 692dc11d0f13..a321c34e3d6e 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -1806,10 +1806,8 @@ static void try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked, u64 skip struct gfs2_rbm rbm = { .rgd = rgd, .bii = 0, .offset = 0 }; while (1) { - down_write(&sdp->sd_log_flush_lock); error = gfs2_rbm_find(&rbm, GFS2_BLKST_UNLINKED, NULL, NULL, true); - up_write(&sdp->sd_log_flush_lock); if (error == -ENOSPC) break; if (WARN_ON_ONCE(error)) -- 2.25.1