From: Steven Whitehouse <swhiteho@redhat.com>
To: cluster-devel@redhat.com, linux-kernel@vger.kernel.org
Cc: Steven Whitehouse <swhiteho@redhat.com>, Abhijith Das <adas@redhat.com>
Subject: [PATCH 14/19] GFS2: Inline qd_trylock into gfs2_quota_unlock
Date: Mon, 4 Nov 2013 11:09:37 +0000 [thread overview]
Message-ID: <1383563382-8535-15-git-send-email-swhiteho@redhat.com> (raw)
In-Reply-To: <1383563382-8535-1-git-send-email-swhiteho@redhat.com>
The function qd_trylock was not a trylock despite its name and
can be inlined into gfs2_quota_unlock in order to make the
code a bit clearer. There should be no functional change as a
result of this patch.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Abhijith Das <adas@redhat.com>
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 75414e7..cfb4cde 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -442,29 +442,6 @@ static int qd_fish(struct gfs2_sbd *sdp, struct gfs2_quota_data **qdp)
return 0;
}
-static int qd_trylock(struct gfs2_quota_data *qd)
-{
- struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
- int found;
-
- spin_lock(&qd_lru_lock);
- found = qd_check_sync(sdp, qd, NULL);
- spin_unlock(&qd_lru_lock);
-
- if (!found)
- return 0;
-
- gfs2_assert_warn(sdp, qd->qd_change_sync);
- if (bh_get(qd)) {
- clear_bit(QDF_LOCKED, &qd->qd_flags);
- slot_put(qd);
- qd_put(qd);
- return 0;
- }
-
- return 1;
-}
-
static void qd_unlock(struct gfs2_quota_data *qd)
{
gfs2_assert_warn(qd->qd_gl->gl_sbd,
@@ -1015,9 +992,11 @@ static int need_sync(struct gfs2_quota_data *qd)
void gfs2_quota_unlock(struct gfs2_inode *ip)
{
+ struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_quota_data *qda[4];
unsigned int count = 0;
unsigned int x;
+ int found;
if (!test_and_clear_bit(GIF_QD_LOCKED, &ip->i_flags))
goto out;
@@ -1030,9 +1009,25 @@ void gfs2_quota_unlock(struct gfs2_inode *ip)
sync = need_sync(qd);
gfs2_glock_dq_uninit(&ip->i_res->rs_qa_qd_ghs[x]);
+ if (!sync)
+ continue;
+
+ spin_lock(&qd_lru_lock);
+ found = qd_check_sync(sdp, qd, NULL);
+ spin_unlock(&qd_lru_lock);
+
+ if (!found)
+ continue;
+
+ gfs2_assert_warn(sdp, qd->qd_change_sync);
+ if (bh_get(qd)) {
+ clear_bit(QDF_LOCKED, &qd->qd_flags);
+ slot_put(qd);
+ qd_put(qd);
+ continue;
+ }
- if (sync && qd_trylock(qd))
- qda[count++] = qd;
+ qda[count++] = qd;
}
if (count) {
--
1.7.4.4
next prev parent reply other threads:[~2013-11-04 11:38 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-04 11:09 GFS2: Pre-pull patch posting (merge window) Steven Whitehouse
2013-11-04 11:09 ` [PATCH 01/19] GFS2: d_splice_alias() can't return error Steven Whitehouse
2013-11-04 11:09 ` [PATCH 02/19] GFS2: optimize rbm_from_block wrt bi_start Steven Whitehouse
2013-11-04 11:09 ` [PATCH 03/19] GFS2: introduce bi_blocks for optimization Steven Whitehouse
2013-11-04 11:09 ` [PATCH 04/19] GFS2: Do not reset flags on active reservations Steven Whitehouse
2013-11-04 11:09 ` [PATCH 05/19] GFS2: Introduce rbm field bii Steven Whitehouse
2013-11-04 11:09 ` [PATCH 06/19] GFS2: new function gfs2_rbm_incr Steven Whitehouse
2013-11-04 11:09 ` [PATCH 07/19] GFS2: fix dentry leaks Steven Whitehouse
2013-11-04 11:09 ` [PATCH 08/19] GFS2: Clean up reservation removal Steven Whitehouse
2013-11-04 11:09 ` [PATCH 09/19] GFS2: Add allocation parameters structure Steven Whitehouse
2013-11-04 11:09 ` [PATCH 10/19] GFS2: Speed up starting point selection for block allocation Steven Whitehouse
2013-11-04 11:09 ` [PATCH 11/19] GFS2: Move gfs2_icbit_munge into quota.c Steven Whitehouse
2013-11-04 11:09 ` [PATCH 12/19] GFS2: Remove obsolete quota tunable Steven Whitehouse
2013-11-04 11:09 ` [PATCH 13/19] GFS2: Make two similar quota code fragments into a function Steven Whitehouse
2013-11-04 11:09 ` Steven Whitehouse [this message]
2013-11-04 11:09 ` [PATCH 15/19] GFS2: Protect quota sync generation Steven Whitehouse
2013-11-04 11:09 ` [PATCH 16/19] GFS2: Use lockref for glocks Steven Whitehouse
2013-11-04 11:22 ` [PATCH 17/19] GFS2: Use reflink for quota data cache Steven Whitehouse
2013-11-04 11:22 ` [PATCH 18/19] GFS2: Rename quota qd_lru_lock qd_lock Steven Whitehouse
2013-11-04 11:22 ` [PATCH 19/19] GFS2: Use generic list_lru for quota Steven Whitehouse
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