mutex subsystem, more i_sem -> i_mutex conversions

Index: linux/fs/nfs/dir.c
===================================================================
@@ -194,7 +194,7 @@ int nfs_readdir_filler(nfs_readdir_descr
 	spin_unlock(&inode->i_lock);
 	/* Ensure consistent page alignment of the data.
 	 * Note: assumes we have exclusive access to this mapping either
-	 *	 through inode->i_sem or some other mechanism.
+	 *	 through inode->i_mutex or some other mechanism.
 	 */
 	if (page->index == 0)
 		invalidate_inode_pages2_range(inode->i_mapping, PAGE_CACHE_SIZE, -1);

@@ -1001,7 +1001,7 @@ static int nfs_open_revalidate(struct de
 	openflags &= ~(O_CREAT|O_TRUNC);
 
 	/*
-	 * Note: we're not holding inode->i_sem and so may be racing with
+	 * Note: we're not holding inode->i_mutex and so may be racing with
 	 * operations that change the directory. We therefore save the
 	 * change attribute *before* we do the RPC call.
 	 */

@@ -1051,7 +1051,7 @@ static struct dentry *nfs_readdir_lookup
 		return dentry;
 	if (!desc->plus || !(entry->fattr->valid & NFS_ATTR_FATTR))
 		return NULL;
-	/* Note: caller is already holding the dir->i_sem! */
+	/* Note: caller is already holding the dir->i_mutex! */
 	dentry = d_alloc(parent, &name);
 	if (dentry == NULL)
 		return NULL;

Index: linux/fs/nfs/file.c
===================================================================
@@ -434,9 +434,9 @@ static int do_unlk(struct file *filp, in
 	 * with locks..
 	 */
 	filemap_fdatawrite(filp->f_mapping);
-	down(&inode->i_sem);
+	mutex_lock(&inode->i_mutex);
 	nfs_wb_all(inode);
-	up(&inode->i_sem);
+	mutex_unlock(&inode->i_mutex);
 	filemap_fdatawait(filp->f_mapping);
 
 	/* NOTE: special case

@@ -467,9 +467,9 @@ static int do_setlk(struct file *filp, i
 	 */
 	status = filemap_fdatawrite(filp->f_mapping);
 	if (status == 0) {
-		down(&inode->i_sem);
+		mutex_lock(&inode->i_mutex);
 		status = nfs_wb_all(inode);
-		up(&inode->i_sem);
+		mutex_unlock(&inode->i_mutex);
 		if (status == 0)
 			status = filemap_fdatawait(filp->f_mapping);
 	}

@@ -498,9 +498,9 @@ static int do_setlk(struct file *filp, i
 	 * This makes locking act as a cache coherency point.
 	 */
 	filemap_fdatawrite(filp->f_mapping);
-	down(&inode->i_sem);
+	mutex_lock(&inode->i_mutex);
 	nfs_wb_all(inode);	/* we may have slept */
-	up(&inode->i_sem);
+	mutex_unlock(&inode->i_mutex);
 	filemap_fdatawait(filp->f_mapping);
 	nfs_zap_caches(inode);
 out:

Index: linux/sound/core/oss/pcm_oss.c
===================================================================
@@ -2141,9 +2141,9 @@ static ssize_t snd_pcm_oss_write(struct 
 	substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_PLAYBACK];
 	if (substream == NULL)
 		return -ENXIO;
-	up(&file->f_dentry->d_inode->i_sem);
+	mutex_unlock(&file->f_dentry->d_inode->i_mutex);
 	result = snd_pcm_oss_write1(substream, buf, count);
-	down(&file->f_dentry->d_inode->i_sem);
+	mutex_lock(&file->f_dentry->d_inode->i_mutex);
 #ifdef OSS_DEBUG
 	printk("pcm_oss: write %li bytes (wrote %li bytes)\n", (long)count, (long)result);
 #endif

Index: linux/sound/core/seq/seq_memory.c
===================================================================
@@ -32,10 +32,6 @@
 #include "seq_info.h"
 #include "seq_lock.h"
 
-/* semaphore in struct file record */
-#define semaphore_of(fp)	((fp)->f_dentry->d_inode->i_sem)
-
-
 static inline int snd_seq_pool_available(pool_t *pool)
 {
 	return pool->total_elements - atomic_read(&pool->counter);