Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw:
  GFS2: Don't use _raw version of RCU dereference
  GFS2: Adding missing unlock_page()
  GFS2: Update to AIL list locking
  GFS2: introduce AIL lock
  GFS2: fix block allocation check for fallocate
  GFS2: Optimize glock multiple-dequeue code
  GFS2: Remove potential race in flock code
  GFS2: Fix glock deallocation race
  GFS2: quota allows exceeding hard limit
  GFS2: deallocation performance patch
  GFS2: panics on quotacheck update
  GFS2: Improve cluster mmap scalability
  GFS2: Fix glock queue trace point
  GFS2: Post-VFS scale update for RCU path walk
  GFS2: Use RCU for glock hash table

1 files changed, 12 insertions, 2 deletions

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index a689901963de..e23d9864c418 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -834,6 +834,7 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
 			goto out_end_trans;
 
 		do_qc(qd, -qd->qd_change_sync);
+		set_bit(QDF_REFRESH, &qd->qd_flags);
 	}
 
 	error = 0;
@@ -929,6 +930,7 @@ int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
 {
 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
 	struct gfs2_alloc *al = ip->i_alloc;
+	struct gfs2_quota_data *qd;
 	unsigned int x;
 	int error = 0;
 
@@ -942,7 +944,11 @@ int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
 	     sort_qd, NULL);
 
 	for (x = 0; x < al->al_qd_num; x++) {
-		error = do_glock(al->al_qd[x], NO_FORCE, &al->al_qd_ghs[x]);
+		int force = NO_FORCE;
+		qd = al->al_qd[x];
+		if (test_and_clear_bit(QDF_REFRESH, &qd->qd_flags))
+			force = FORCE;
+		error = do_glock(qd, force, &al->al_qd_ghs[x]);
 		if (error)
 			break;
 	}
@@ -1587,6 +1593,8 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
 
 	offset = qd2offset(qd);
 	alloc_required = gfs2_write_alloc_required(ip, offset, sizeof(struct gfs2_quota));
+	if (gfs2_is_stuffed(ip))
+		alloc_required = 1;
 	if (alloc_required) {
 		al = gfs2_alloc_get(ip);
 		if (al == NULL)
@@ -1600,7 +1608,9 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
 		blocks += gfs2_rg_blocks(al);
 	}
 
-	error = gfs2_trans_begin(sdp, blocks + RES_DINODE + 1, 0);
+	/* Some quotas span block boundaries and can update two blocks,
+	   adding an extra block to the transaction to handle such quotas */
+	error = gfs2_trans_begin(sdp, blocks + RES_DINODE + 2, 0);
 	if (error)
 		goto out_release;