From 627add2d1385394d020c84533c91ad26bc37b166 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Wed, 5 Jul 2006 13:16:19 -0400 Subject: [PATCH] [GFS2] Correct logic in glock scanner Under certain circumstances the glock scanning logic would demote locks which ought not to have been selected for demotion. Signed-off-by: Steven Whitehouse --- fs/gfs2/glock.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index dbeb4ad836bd..7f362d0c3f7a 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -1967,8 +1967,11 @@ static void scan_glock(struct gfs2_glock *gl) if (gfs2_glmutex_trylock(gl)) { if (gl->gl_ops == &gfs2_inode_glops) { struct gfs2_inode *ip = gl->gl_object; - if (ip) + if (ip == NULL) { + struct gfs2_sbd *sdp = gl->gl_sbd; + gfs2_assert_withdraw(sdp, gl->gl_state == LM_ST_UNLOCKED); goto out_schedule; + } } if (queue_empty(gl, &gl->gl_holders) && gl->gl_state != LM_ST_UNLOCKED && @@ -1982,7 +1985,7 @@ static void scan_glock(struct gfs2_glock *gl) return; - out_schedule: +out_schedule: gfs2_glmutex_unlock(gl); gfs2_glock_schedule_for_reclaim(gl); gfs2_glock_put(gl);