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| author | Steven Whitehouse <swhiteho@redhat.com> | 2011-01-19 10:30:01 +0100 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2011-01-21 10:39:08 +0100 |
| commit | bc015cb84129eb1451913cfebece270bf7a39e0f (patch) | |
| tree | 4f116a61b802d87ae80051e9ae05d8fcb73d9ae7 /MAINTAINERS | |
| parent | Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
| download | linux-bc015cb84129eb1451913cfebece270bf7a39e0f.tar.xz linux-bc015cb84129eb1451913cfebece270bf7a39e0f.zip | |
GFS2: Use RCU for glock hash table
This has a number of advantages:
- Reduces contention on the hash table lock
- Makes the code smaller and simpler
- Should speed up glock dumps when under load
- Removes ref count changing in examine_bucket
- No longer need hash chain lock in glock_put() in common case
There are some further changes which this enables and which
we may do in the future. One is to look at using SLAB_RCU,
and another is to look at using a per-cpu counter for the
per-sb glock counter, since that is touched twice in the
lifetime of each glock (but only used at umount time).
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'MAINTAINERS')
0 files changed, 0 insertions, 0 deletions