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| author | Benjamin Marzinski <bmarzins@redhat.com> | 2013-06-14 11:38:29 -0500 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2013-06-19 09:41:59 +0100 |
| commit | 5d054964f57ade1adb310313c3cfb8e93e804e8f (patch) | |
| tree | c04a28ef48bc298d5aaffda4e0cf2cda10eba43e /fs/gfs2/glops.c | |
| parent | 512cbf02fde42b747c5752f135afd3f3f6d598e2 (diff) | |
| download | blackbird-op-linux-5d054964f57ade1adb310313c3cfb8e93e804e8f.tar.gz blackbird-op-linux-5d054964f57ade1adb310313c3cfb8e93e804e8f.zip | |
GFS2: aggressively issue revokes in gfs2_log_flush
This patch looks at all the outstanding blocks in all the transactions
on the log, and moves the completed ones to the ail2 list. Then it
issues revokes for these blocks. This will hopefully speed things up
in situations where there is a lot of contention for glocks, especially
if they are acquired serially.
revoke_lo_before_commit will issue at most one log block's full of these
preemptive revokes. The amount of reserved log space that
gfs2_log_reserve() ignores has been incremented to allow for this extra
block.
This patch also consolidates the common revoke instructions into one
function, gfs2_add_revoke().
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/glops.c')
| -rw-r--r-- | fs/gfs2/glops.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index c66e99c97571..5f2e5224c51c 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -54,7 +54,6 @@ static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) struct gfs2_bufdata *bd, *tmp; struct buffer_head *bh; const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock); - sector_t blocknr; gfs2_log_lock(sdp); spin_lock(&sdp->sd_ail_lock); @@ -65,13 +64,6 @@ static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) continue; gfs2_ail_error(gl, bh); } - blocknr = bh->b_blocknr; - bh->b_private = NULL; - gfs2_remove_from_ail(bd); /* drops ref on bh */ - - bd->bd_bh = NULL; - bd->bd_blkno = blocknr; - gfs2_trans_add_revoke(sdp, bd); } GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count)); |
