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authorSteven Whitehouse <swhiteho@redhat.com>2008-05-21 12:03:22 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2008-06-27 04:39:22 -0400
commit6802e3400ff4549525930ee744030c36fce9cc73 (patch)
treedb889bf5337c1d3bb12ebbf571c3c1cad1040496 /fs/gfs2/super.c
parent543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff)
[GFS2] Clean up the glock core
This patch implements a number of cleanups to the core of the GFS2 glock code. As a result a lot of code is removed. It looks like a really big change, but actually a large part of this patch is either removing or moving existing code. There are some new bits too though, such as the new run_queue() function which is considerably streamlined. Highlights of this patch include: o Fixes a cluster coherency bug during SH -> EX lock conversions o Removes the "glmutex" code in favour of a single bit lock o Removes the ->go_xmote_bh() for inodes since it was duplicating ->go_lock() o We now only use the ->lm_lock() function for both locks and unlocks (i.e. unlock is a lock with target mode LM_ST_UNLOCKED) o The fast path is considerably shortly, giving performance gains especially with lock_nolock o The glock_workqueue is now used for all the callbacks from the DLM which allows us to simplify the lock_dlm module (see following patch) o The way is now open to make further changes such as eliminating the two threads (gfs2_glockd and gfs2_scand) in favour of a more efficient scheme. This patch has undergone extensive testing with various test suites so it should be pretty stable by now. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Cc: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/super.c')
-rw-r--r--fs/gfs2/super.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 7aeacbc65f35..12fe38fe498f 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -941,8 +941,7 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp,
941 } 941 }
942 942
943 error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED, 943 error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED,
944 LM_FLAG_PRIORITY | GL_NOCACHE, 944 GL_NOCACHE, t_gh);
945 t_gh);
946 945
947 list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 946 list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
948 error = gfs2_jdesc_check(jd); 947 error = gfs2_jdesc_check(jd);