GFS2: Allow flocks to use normal glock dq rather than dq_wait
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>
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 4fc3a30..491e8e0 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -991,7 +991,7 @@
goto out;
flock_lock_file_wait(file,
&(struct file_lock){.fl_type = F_UNLCK});
- gfs2_glock_dq_wait(fl_gh);
+ gfs2_glock_dq(fl_gh);
gfs2_holder_reinit(state, flags, fl_gh);
} else {
error = gfs2_glock_get(GFS2_SB(&ip->i_inode), ip->i_no_addr,
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index b703dcc..ee4e04f 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1128,9 +1128,7 @@
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);
}
/**
