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GFS2: Allow flocks to use normal glock dq rather than dq_wait

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This patch allows flock glocks to use a non-blocking dequeue rather
than dq_wait. It also reverts the previous patch I had posted regarding
dq_wait. The reverted patch isn't necessarily a bad idea, but I decided
this might avoid unforeseen side effects, and was therefore safer.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson
2014-06-26 10:46:25 -04:00
committed by Steven Whitehouse
parent 6ec43b1838
commit 5bef3e7cf1
2 changed files with 2 additions and 4 deletions
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4
fs/gfs2/glock.c
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@@ -1128,9 +1128,7 @@ void gfs2_glock_dq_wait(struct gfs2_holder *gh)
struct gfs2_glock *gl = gh->gh_gl;
gfs2_glock_dq(gh);
might_sleep();
if (!find_first_holder(gl))
wait_on_bit(&gl->gl_flags, GLF_DEMOTE, gfs2_glock_demote_wait,
TASK_UNINTERRUPTIBLE);
wait_on_bit(&gl->gl_flags, GLF_DEMOTE, gfs2_glock_demote_wait, TASK_UNINTERRUPTIBLE);
}
/**