[OCFS2] Make ip_io_sem a mutex

ip_io_sem is now ip_io_mutex.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
index d424041..bae3d75 100644 (file)
--- a/fs/ocfs2/buffer_head_io.c
+++ b/fs/ocfs2/buffer_head_io.c
@@ -58,7 +58,7 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh,
                goto out;
        }
 
-       down(&OCFS2_I(inode)->ip_io_sem);
+       mutex_lock(&OCFS2_I(inode)->ip_io_mutex);
 
        lock_buffer(bh);
        set_buffer_uptodate(bh);
@@ -82,7 +82,7 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct buffer_head *bh,
                brelse(bh);
        }
 
-       up(&OCFS2_I(inode)->ip_io_sem);
+       mutex_unlock(&OCFS2_I(inode)->ip_io_mutex);
 out:
        mlog_exit(ret);
        return ret;
@@ -125,13 +125,13 @@ int ocfs2_read_blocks(struct ocfs2_super *osb, u64 block, int nr,
                flags &= ~OCFS2_BH_CACHED;
 
        if (inode)
-               down(&OCFS2_I(inode)->ip_io_sem);
+               mutex_lock(&OCFS2_I(inode)->ip_io_mutex);
        for (i = 0 ; i < nr ; i++) {
                if (bhs[i] == NULL) {
                        bhs[i] = sb_getblk(sb, block++);
                        if (bhs[i] == NULL) {
                                if (inode)
-                                       up(&OCFS2_I(inode)->ip_io_sem);
+                                       mutex_unlock(&OCFS2_I(inode)->ip_io_mutex);
                                status = -EIO;
                                mlog_errno(status);
                                goto bail;
@@ -220,7 +220,7 @@ int ocfs2_read_blocks(struct ocfs2_super *osb, u64 block, int nr,
                        ocfs2_set_buffer_uptodate(inode, bh);
        }
        if (inode)
-               up(&OCFS2_I(inode)->ip_io_sem);
+               mutex_unlock(&OCFS2_I(inode)->ip_io_mutex);
 
        mlog(ML_BH_IO, "block=(%"MLFu64"), nr=(%d), cached=%s\n", block, nr,
             (!(flags & OCFS2_BH_CACHED) || ignore_cache) ? "no" : "yes");

diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index d4ecc06..8122489 100644 (file)
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -903,10 +903,10 @@ void ocfs2_clear_inode(struct inode *inode)
                        "Clear inode of %"MLFu64", inode is locked\n",
                        oi->ip_blkno);
 
-       mlog_bug_on_msg(down_trylock(&oi->ip_io_sem),
-                       "Clear inode of %"MLFu64", io_sem is locked\n",
+       mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex),
+                       "Clear inode of %"MLFu64", io_mutex is locked\n",
                        oi->ip_blkno);
-       up(&oi->ip_io_sem);
+       mutex_unlock(&oi->ip_io_mutex);
 
        /*
         * down_trylock() returns 0, down_write_trylock() returns 1

diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
index 9b01774..84c5079 100644 (file)
--- a/fs/ocfs2/inode.h
+++ b/fs/ocfs2/inode.h
@@ -46,10 +46,10 @@ struct ocfs2_inode_info
        struct list_head                ip_io_markers;
        int                             ip_orphaned_slot;
 
-       struct semaphore                ip_io_sem;
+       struct mutex                    ip_io_mutex;
 
        /* Used by the journalling code to attach an inode to a
-        * handle.  These are protected by ip_io_sem in order to lock
+        * handle.  These are protected by ip_io_mutex in order to lock
         * out other I/O to the inode until we either commit or
         * abort. */
        struct list_head                ip_handle_list;

diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 303c8d9..65bd69d 100644 (file)
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -401,7 +401,7 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
         * j_trans_barrier for us. */
        ocfs2_set_inode_lock_trans(OCFS2_SB(inode->i_sb)->journal, inode);
 
-       down(&OCFS2_I(inode)->ip_io_sem);
+       mutex_lock(&OCFS2_I(inode)->ip_io_mutex);
        switch (type) {
        case OCFS2_JOURNAL_ACCESS_CREATE:
        case OCFS2_JOURNAL_ACCESS_WRITE:
@@ -416,7 +416,7 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle,
                status = -EINVAL;
                mlog(ML_ERROR, "Uknown access type!\n");
        }
-       up(&OCFS2_I(inode)->ip_io_sem);
+       mutex_unlock(&OCFS2_I(inode)->ip_io_mutex);
 
        if (status < 0)
                mlog(ML_ERROR, "Error %d getting %d access to buffer!\n",

diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 364d64b..c44075d 100644 (file)
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -932,7 +932,7 @@ static void ocfs2_inode_init_once(void *data,
                oi->ip_dir_start_lookup = 0;
 
                init_rwsem(&oi->ip_alloc_sem);
-               init_MUTEX(&(oi->ip_io_sem));
+               mutex_init(&oi->ip_io_mutex);
 
                oi->ip_blkno = 0ULL;
                oi->ip_clusters = 0;

diff --git a/fs/ocfs2/uptodate.c b/fs/ocfs2/uptodate.c
index 50c8fb3..300b5be 100644 (file)
--- a/fs/ocfs2/uptodate.c
+++ b/fs/ocfs2/uptodate.c
@@ -388,7 +388,7 @@ out_free:
        }
 }
 
-/* Item insertion is guarded by ip_io_sem, so the insertion path takes
+/* Item insertion is guarded by ip_io_mutex, so the insertion path takes
  * advantage of this by not rechecking for a duplicate insert during
  * the slow case. Additionally, if the cache needs to be bumped up to
  * a tree, the code will not recheck after acquiring the lock --
@@ -418,7 +418,7 @@ void ocfs2_set_buffer_uptodate(struct inode *inode,
             (unsigned long long) bh->b_blocknr);
 
        /* No need to recheck under spinlock - insertion is guarded by
-        * ip_io_sem */
+        * ip_io_mutex */
        spin_lock(&oi->ip_lock);
        if (ocfs2_insert_can_use_array(oi, ci)) {
                /* Fast case - it's an array and there's a free
@@ -440,7 +440,7 @@ void ocfs2_set_buffer_uptodate(struct inode *inode,
 
 /* Called against a newly allocated buffer. Most likely nobody should
  * be able to read this sort of metadata while it's still being
- * allocated, but this is careful to take ip_io_sem anyway. */
+ * allocated, but this is careful to take ip_io_mutex anyway. */
 void ocfs2_set_new_buffer_uptodate(struct inode *inode,
                                   struct buffer_head *bh)
 {
@@ -451,9 +451,9 @@ void ocfs2_set_new_buffer_uptodate(struct inode *inode,
 
        set_buffer_uptodate(bh);
 
-       down(&oi->ip_io_sem);
+       mutex_lock(&oi->ip_io_mutex);
        ocfs2_set_buffer_uptodate(inode, bh);
-       up(&oi->ip_io_sem);
+       mutex_unlock(&oi->ip_io_mutex);
 }
 
 /* Requires ip_lock. */