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author | Steven Whitehouse <swhiteho@redhat.com> | 2008-06-03 14:09:53 +0100 |
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committer | Steven Whitehouse <swhiteho@redhat.com> | 2008-06-27 09:39:44 +0100 |
commit | 1bdad606338debc6384b2844f1b53cc436b3ac90 (patch) | |
tree | 7929bc1f652f88f104e8b6fa6a424cd211b50a42 /fs/gfs2/glock.h | |
parent | 9171f5a991e7613cbee816874ad8c9515dcab50f (diff) | |
download | linux-3.10-1bdad606338debc6384b2844f1b53cc436b3ac90.tar.gz linux-3.10-1bdad606338debc6384b2844f1b53cc436b3ac90.tar.bz2 linux-3.10-1bdad606338debc6384b2844f1b53cc436b3ac90.zip |
[GFS2] Remove remote lock dropping code
There are several reasons why this is undesirable:
1. It never happens during normal operation anyway
2. If it does happen it causes performance to be very, very poor
3. It isn't likely to solve the original problem (memory shortage
on remote DLM node) it was supposed to solve
4. It uses a bunch of arbitrary constants which are unlikely to be
correct for any particular situation and for which the tuning seems
to be a black art.
5. In an N node cluster, only 1/N of the dropped locked will actually
contribute to solving the problem on average.
So all in all we are better off without it. This also makes merging
the lock_dlm module into GFS2 a bit easier.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/glock.h')
-rw-r--r-- | fs/gfs2/glock.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 7389f8ef0a3..971d92af70f 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -132,7 +132,7 @@ void gfs2_lvb_unhold(struct gfs2_glock *gl); void gfs2_glock_cb(void *cb_data, unsigned int type, void *data); void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl); void gfs2_reclaim_glock(struct gfs2_sbd *sdp); -void gfs2_gl_hash_clear(struct gfs2_sbd *sdp, int wait); +void gfs2_gl_hash_clear(struct gfs2_sbd *sdp); int __init gfs2_glock_init(void); void gfs2_glock_exit(void); |