[PATCH] mutex subsystem, semaphore to mutex: XFS

This patch switches XFS over to use the new mutex code directly as
opposed to the previous workaround patch I posted earlier that avoided
the namespace clash by forcing it back to semaphores. This falls in the
'works for me<tm>' category.

Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 files changed, 22 insertions, 26 deletions

diff --git a/fs/xfs/linux-2.6/mutex.h b/fs/xfs/linux-2.6/mutex.h
index ce773d89a92..d3369b6ca16 100644
--- a/fs/xfs/linux-2.6/mutex.h
+++ b/fs/xfs/linux-2.6/mutex.h
@@ -19,7 +19,7 @@
 #define __XFS_SUPPORT_MUTEX_H__
 
 #include <linux/spinlock.h>
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 /*
  * Map the mutex'es from IRIX to Linux semaphores.
@@ -28,12 +28,8 @@
  * callers.
  */
 #define MUTEX_DEFAULT           0x0
-typedef struct semaphore        mutex_t;
 
-#define mutex_init(lock, type, name)            sema_init(lock, 1)
-#define mutex_destroy(lock)                     sema_init(lock, -99)
-#define mutex_lock(lock, num)                   down(lock)
-#define mutex_trylock(lock)                     (down_trylock(lock) ? 0 : 1)
-#define mutex_unlock(lock)                      up(lock)
+typedef struct mutex            mutex_t;
+//#define mutex_destroy(lock)                   do{}while(0)
 
 #endif /* __XFS_SUPPORT_MUTEX_H__ */
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c
index 00b5043dfa5..772ac48329e 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/quota/xfs_dquot.c
@@ -104,7 +104,7 @@ xfs_qm_dqinit(
          */
         if (brandnewdquot) {
                 dqp->dq_flnext = dqp->dq_flprev = dqp;
-                mutex_init(&dqp->q_qlock,  MUTEX_DEFAULT, "xdq");
+                mutex_init(&dqp->q_qlock);
                 initnsema(&dqp->q_flock, 1, "fdq");
                 sv_init(&dqp->q_pinwait, SV_DEFAULT, "pdq");
 
@@ -1382,7 +1382,7 @@ void
 xfs_dqlock(
         xfs_dquot_t *dqp)
 {
-        mutex_lock(&(dqp->q_qlock), PINOD);
+        mutex_lock(&(dqp->q_qlock));
 }
 
 void
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index 5328a293712..bb6991a7a61 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -167,7 +167,7 @@ xfs_Gqm_init(void)
         xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO;
         xqm->qm_nrefs = 0;
 #ifdef DEBUG
-        mutex_init(&qcheck_lock, MUTEX_DEFAULT, "qchk");
+        xfs_mutex_init(&qcheck_lock, MUTEX_DEFAULT, "qchk");
 #endif
         return xqm;
 }
@@ -1166,7 +1166,7 @@ xfs_qm_init_quotainfo(
         qinf->qi_dqreclaims = 0;
 
         /* mutex used to serialize quotaoffs */
-        mutex_init(&qinf->qi_quotaofflock, MUTEX_DEFAULT, "qoff");
+        mutex_init(&qinf->qi_quotaofflock);
 
         /* Precalc some constants */
         qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
@@ -1285,7 +1285,7 @@ xfs_qm_list_init(
         char            *str,
         int             n)
 {
-        mutex_init(&list->qh_lock, MUTEX_DEFAULT, str);
+        mutex_init(&list->qh_lock);
         list->qh_next = NULL;
         list->qh_version = 0;
         list->qh_nelems = 0;
@@ -2762,7 +2762,7 @@ STATIC void
 xfs_qm_freelist_init(xfs_frlist_t *ql)
 {
         ql->qh_next = ql->qh_prev = (xfs_dquot_t *) ql;
-        mutex_init(&ql->qh_lock, MUTEX_DEFAULT, "dqf");
+        mutex_init(&ql->qh_lock);
         ql->qh_version = 0;
         ql->qh_nelems = 0;
 }
@@ -2772,7 +2772,7 @@ xfs_qm_freelist_destroy(xfs_frlist_t *ql)
 {
         xfs_dquot_t     *dqp, *nextdqp;
 
-        mutex_lock(&ql->qh_lock, PINOD);
+        mutex_lock(&ql->qh_lock);
         for (dqp = ql->qh_next;
              dqp != (xfs_dquot_t *)ql; ) {
                 xfs_dqlock(dqp);
diff --git a/fs/xfs/quota/xfs_qm.h b/fs/xfs/quota/xfs_qm.h
index 12da259f2fc..4568deb6da8 100644
--- a/fs/xfs/quota/xfs_qm.h
+++ b/fs/xfs/quota/xfs_qm.h
@@ -165,7 +165,7 @@ typedef struct xfs_dquot_acct {
 #define XFS_QM_IWARNLIMIT       5
 #define XFS_QM_RTBWARNLIMIT     5
 
-#define XFS_QM_LOCK(xqm)        (mutex_lock(&xqm##_lock, PINOD))
+#define XFS_QM_LOCK(xqm)        (mutex_lock(&xqm##_lock))
 #define XFS_QM_UNLOCK(xqm)      (mutex_unlock(&xqm##_lock))
 #define XFS_QM_HOLD(xqm)        ((xqm)->qm_nrefs++)
 #define XFS_QM_RELE(xqm)        ((xqm)->qm_nrefs--)
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c
index d9d2993de43..90402a1c398 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/quota/xfs_qm_bhv.c
@@ -363,7 +363,7 @@ xfs_qm_init(void)
                 KERN_INFO "SGI XFS Quota Management subsystem\n";
 
         printk(message);
-        mutex_init(&xfs_Gqm_lock, MUTEX_DEFAULT, "xfs_qmlock");
+        mutex_init(&xfs_Gqm_lock);
         vfs_bhv_set_custom(&xfs_qmops, &xfs_qmcore_xfs);
         xfs_qm_init_procfs();
 }
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index 24690e1af65..86a1d09f48d 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -233,7 +233,7 @@ xfs_qm_scall_quotaoff(
          */
         ASSERT(mp->m_quotainfo);
         if (mp->m_quotainfo)
-                mutex_lock(&(XFS_QI_QOFFLOCK(mp)), PINOD);
+                mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
 
         ASSERT(mp->m_quotainfo);
 
@@ -508,7 +508,7 @@ xfs_qm_scall_quotaon(
         /*
          * Switch on quota enforcement in core.
          */
-        mutex_lock(&(XFS_QI_QOFFLOCK(mp)), PINOD);
+        mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
         mp->m_qflags |= (flags & XFS_ALL_QUOTA_ENFD);
         mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 
@@ -617,7 +617,7 @@ xfs_qm_scall_setqlim(
          * a quotaoff from happening). (XXXThis doesn't currently happen
          * because we take the vfslock before calling xfs_qm_sysent).
          */
-        mutex_lock(&(XFS_QI_QOFFLOCK(mp)), PINOD);
+        mutex_lock(&(XFS_QI_QOFFLOCK(mp)));
 
         /*
          * Get the dquot (locked), and join it to the transaction.
@@ -1426,7 +1426,7 @@ xfs_qm_internalqcheck(
         xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
         XFS_bflush(mp->m_ddev_targp);
 
-        mutex_lock(&qcheck_lock, PINOD);
+        mutex_lock(&qcheck_lock);
         /* There should be absolutely no quota activity while this
            is going on. */
         qmtest_udqtab = kmem_zalloc(qmtest_hashmask *
diff --git a/fs/xfs/quota/xfs_quota_priv.h b/fs/xfs/quota/xfs_quota_priv.h
index 7a9f3beb818..b7ddd04aae3 100644
--- a/fs/xfs/quota/xfs_quota_priv.h
+++ b/fs/xfs/quota/xfs_quota_priv.h
@@ -51,7 +51,7 @@
 #define XFS_QI_MPLNEXT(mp)      ((mp)->m_quotainfo->qi_dqlist.qh_next)
 #define XFS_QI_MPLNDQUOTS(mp)   ((mp)->m_quotainfo->qi_dqlist.qh_nelems)
 
-#define XQMLCK(h)                       (mutex_lock(&((h)->qh_lock), PINOD))
+#define XQMLCK(h)                       (mutex_lock(&((h)->qh_lock)))
 #define XQMUNLCK(h)                     (mutex_unlock(&((h)->qh_lock)))
 #ifdef DEBUG
 struct xfs_dqhash;
diff --git a/fs/xfs/support/uuid.c b/fs/xfs/support/uuid.c
index 70ce40914c8..69ec4f540c3 100644
--- a/fs/xfs/support/uuid.c
+++ b/fs/xfs/support/uuid.c
@@ -24,7 +24,7 @@ static uuid_t	*uuid_table;
 void
 uuid_init(void)
 {
-        mutex_init(&uuid_monitor, MUTEX_DEFAULT, "uuid_monitor");
+        mutex_init(&uuid_monitor);
 }
 
 /*
@@ -94,7 +94,7 @@ uuid_table_insert(uuid_t *uuid)
 {
         int     i, hole;
 
-        mutex_lock(&uuid_monitor, PVFS);
+        mutex_lock(&uuid_monitor);
         for (i = 0, hole = -1; i < uuid_table_size; i++) {
                 if (uuid_is_nil(&uuid_table[i])) {
                         hole = i;
@@ -122,7 +122,7 @@ uuid_table_remove(uuid_t *uuid)
 {
         int     i;
 
-        mutex_lock(&uuid_monitor, PVFS);
+        mutex_lock(&uuid_monitor);
         for (i = 0; i < uuid_table_size; i++) {
                 if (uuid_is_nil(&uuid_table[i]))
                         continue;
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 541d5dd474b..303af86739b 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -117,7 +117,7 @@ xfs_mount_init(void)
 
         AIL_LOCKINIT(&mp->m_ail_lock, "xfs_ail");
         spinlock_init(&mp->m_sb_lock, "xfs_sb");
-        mutex_init(&mp->m_ilock, MUTEX_DEFAULT, "xfs_ilock");
+        mutex_init(&mp->m_ilock);
         initnsema(&mp->m_growlock, 1, "xfs_grow");
         /*
          * Initialize the AIL.
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 08b2e0a5d80..3432fd5a398 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -533,7 +533,7 @@ typedef struct xfs_mod_sb {
         int             msb_delta;      /* Change to make to specified field */
 } xfs_mod_sb_t;
 
-#define XFS_MOUNT_ILOCK(mp)     mutex_lock(&((mp)->m_ilock), PINOD)
+#define XFS_MOUNT_ILOCK(mp)     mutex_lock(&((mp)->m_ilock))
 #define XFS_MOUNT_IUNLOCK(mp)   mutex_unlock(&((mp)->m_ilock))
 #define XFS_SB_LOCK(mp)         mutex_spinlock(&(mp)->m_sb_lock)
 #define XFS_SB_UNLOCK(mp,s)     mutex_spinunlock(&(mp)->m_sb_lock,(s))