[XFS] Unwrap XFS_SB_LOCK.

Un-obfuscate XFS_SB_LOCK, remove XFS_SB_LOCK->mutex_lock->spin_lock
macros, call spin_lock directly, remove extraneous cookie holdover from
old xfs code, and change lock type to spinlock_t.

SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29746a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

2 files changed, 13 insertions, 18 deletions

diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index d488645f833d..08b44758035e 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -310,7 +310,6 @@ xfs_qm_mount_quotas(
 	xfs_mount_t	*mp,
 	int		mfsi_flags)
 {
-	unsigned long	s;
 	int		error = 0;
 	uint		sbf;
 
@@ -367,13 +366,13 @@ xfs_qm_mount_quotas(
 
  write_changes:
 	/*
-	 * We actually don't have to acquire the SB_LOCK at all.
+	 * We actually don't have to acquire the m_sb_lock at all.
 	 * This can only be called from mount, and that's single threaded. XXX
 	 */
-	s = XFS_SB_LOCK(mp);
+	spin_lock(&mp->m_sb_lock);
 	sbf = mp->m_sb.sb_qflags;
 	mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL;
-	XFS_SB_UNLOCK(mp, s);
+	spin_unlock(&mp->m_sb_lock);
 
 	if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) {
 		if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) {
@@ -1370,7 +1369,6 @@ xfs_qm_qino_alloc(
 {
 	xfs_trans_t	*tp;
 	int		error;
-	unsigned long	s;
 	int		committed;
 
 	tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE);
@@ -1402,7 +1400,7 @@ xfs_qm_qino_alloc(
 	 * sbfields arg may contain fields other than *QUOTINO;
 	 * VERSIONNUM for example.
 	 */
-	s = XFS_SB_LOCK(mp);
+	spin_lock(&mp->m_sb_lock);
 	if (flags & XFS_QMOPT_SBVERSION) {
 #if defined(DEBUG) && defined(XFS_LOUD_RECOVERY)
 		unsigned oldv = mp->m_sb.sb_versionnum;
@@ -1429,7 +1427,7 @@ xfs_qm_qino_alloc(
 		mp->m_sb.sb_uquotino = (*ip)->i_ino;
 	else
 		mp->m_sb.sb_gquotino = (*ip)->i_ino;
-	XFS_SB_UNLOCK(mp, s);
+	spin_unlock(&mp->m_sb_lock);
 	xfs_mod_sb(tp, sbfields);
 
 	if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) {
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index ad5579d4eac4..2cc5886cfe85 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -200,7 +200,6 @@ xfs_qm_scall_quotaoff(
 	boolean_t		force)
 {
 	uint			dqtype;
-	unsigned long	s;
 	int			error;
 	uint			inactivate_flags;
 	xfs_qoff_logitem_t	*qoffstart;
@@ -237,9 +236,9 @@ xfs_qm_scall_quotaoff(
 	if ((flags & XFS_ALL_QUOTA_ACCT) == 0) {
 		mp->m_qflags &= ~(flags);
 
-		s = XFS_SB_LOCK(mp);
+		spin_lock(&mp->m_sb_lock);
 		mp->m_sb.sb_qflags = mp->m_qflags;
-		XFS_SB_UNLOCK(mp, s);
+		spin_unlock(&mp->m_sb_lock);
 		mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 
 		/* XXX what to do if error ? Revert back to old vals incore ? */
@@ -415,7 +414,6 @@ xfs_qm_scall_quotaon(
 	uint		flags)
 {
 	int		error;
-	unsigned long	s;
 	uint		qf;
 	uint		accflags;
 	__int64_t	sbflags;
@@ -468,10 +466,10 @@ xfs_qm_scall_quotaon(
 	 * Change sb_qflags on disk but not incore mp->qflags
 	 * if this is the root filesystem.
 	 */
-	s = XFS_SB_LOCK(mp);
+	spin_lock(&mp->m_sb_lock);
 	qf = mp->m_sb.sb_qflags;
 	mp->m_sb.sb_qflags = qf | flags;
-	XFS_SB_UNLOCK(mp, s);
+	spin_unlock(&mp->m_sb_lock);
 
 	/*
 	 * There's nothing to change if it's the same.
@@ -815,7 +813,6 @@ xfs_qm_log_quotaoff(
 {
 	xfs_trans_t	       *tp;
 	int			error;
-	unsigned long	s;
 	xfs_qoff_logitem_t     *qoffi=NULL;
 	uint			oldsbqflag=0;
 
@@ -832,10 +829,10 @@ xfs_qm_log_quotaoff(
 	qoffi = xfs_trans_get_qoff_item(tp, NULL, flags & XFS_ALL_QUOTA_ACCT);
 	xfs_trans_log_quotaoff_item(tp, qoffi);
 
-	s = XFS_SB_LOCK(mp);
+	spin_lock(&mp->m_sb_lock);
 	oldsbqflag = mp->m_sb.sb_qflags;
 	mp->m_sb.sb_qflags = (mp->m_qflags & ~(flags)) & XFS_MOUNT_QUOTA_ALL;
-	XFS_SB_UNLOCK(mp, s);
+	spin_unlock(&mp->m_sb_lock);
 
 	xfs_mod_sb(tp, XFS_SB_QFLAGS);
 
@@ -854,9 +851,9 @@ error0:
 		 * No one else is modifying sb_qflags, so this is OK.
 		 * We still hold the quotaofflock.
 		 */
-		s = XFS_SB_LOCK(mp);
+		spin_lock(&mp->m_sb_lock);
 		mp->m_sb.sb_qflags = oldsbqflag;
-		XFS_SB_UNLOCK(mp, s);
+		spin_unlock(&mp->m_sb_lock);
 	}
 	*qoffstartp = qoffi;
 	return (error);