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| author | Steven Whitehouse <swhiteho@redhat.com> | 2007-05-14 17:43:26 +0100 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2007-07-09 08:22:21 +0100 |
| commit | 41d7db0ab437bc84f8a6e77cccc626ce937605ac (patch) | |
| tree | de836241c692264ef72cb08cd59d776759d4d99a /fs/gfs2/locking/dlm/thread.c | |
| parent | cd81a4bac67d44742ab0aa1848f4a78e9d7e1093 (diff) | |
| download | kernel-crypto-41d7db0ab437bc84f8a6e77cccc626ce937605ac.tar.gz kernel-crypto-41d7db0ab437bc84f8a6e77cccc626ce937605ac.tar.xz kernel-crypto-41d7db0ab437bc84f8a6e77cccc626ce937605ac.zip | |
[GFS2] Reduce size of struct gdlm_lock
This patch removes the completion (which is rather large) from struct
gdlm_lock in favour of using the wait_on_bit() functions. We don't need
to add any extra fields to the structure to do this, so we save 32 bytes
(on x86_64) per structure. This adds up to quite a lot when we may
potentially have millions of these lock structures,
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Acked-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/gfs2/locking/dlm/thread.c')
| -rw-r--r-- | fs/gfs2/locking/dlm/thread.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/gfs2/locking/dlm/thread.c b/fs/gfs2/locking/dlm/thread.c index 9cf1f168eaf..1aca51e4509 100644 --- a/fs/gfs2/locking/dlm/thread.c +++ b/fs/gfs2/locking/dlm/thread.c @@ -44,6 +44,13 @@ static void process_blocking(struct gdlm_lock *lp, int bast_mode) ls->fscb(ls->sdp, cb, &lp->lockname); } +static void wake_up_ast(struct gdlm_lock *lp) +{ + clear_bit(LFL_AST_WAIT, &lp->flags); + smp_mb__after_clear_bit(); + wake_up_bit(&lp->flags, LFL_AST_WAIT); +} + static void process_complete(struct gdlm_lock *lp) { struct gdlm_ls *ls = lp->ls; @@ -136,7 +143,7 @@ static void process_complete(struct gdlm_lock *lp) */ if (test_and_clear_bit(LFL_SYNC_LVB, &lp->flags)) { - complete(&lp->ast_wait); + wake_up_ast(lp); return; } @@ -214,7 +221,7 @@ out: if (test_bit(LFL_INLOCK, &lp->flags)) { clear_bit(LFL_NOBLOCK, &lp->flags); lp->cur = lp->req; - complete(&lp->ast_wait); + wake_up_ast(lp); return; } |