[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem

This patch converts the inode semaphore to a mutex. I have tested it on
XFS and compiled as much as one can consider on an ia64. Anyway your
luck with it might be different.

Modified-by: Ingo Molnar <mingo@elte.hu>

(finished the conversion)

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 6 insertions, 6 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index 1f3507c75e90..d2ba358c6e38 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -137,7 +137,7 @@ spufs_delete_inode(struct inode *inode)
 static void spufs_prune_dir(struct dentry *dir)
 {
         struct dentry *dentry, *tmp;
-        down(&dir->d_inode->i_sem);
+        mutex_lock(&dir->d_inode->i_mutex);
         list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_child) {
                 spin_lock(&dcache_lock);
                 spin_lock(&dentry->d_lock);
@@ -154,7 +154,7 @@ static void spufs_prune_dir(struct dentry *dir)
                 }
         }
         shrink_dcache_parent(dir);
-        up(&dir->d_inode->i_sem);
+        mutex_unlock(&dir->d_inode->i_mutex);
 }
 
 static int spufs_rmdir(struct inode *root, struct dentry *dir_dentry)
@@ -162,15 +162,15 @@ static int spufs_rmdir(struct inode *root, struct dentry *dir_dentry)
         struct spu_context *ctx;
 
         /* remove all entries */
-        down(&root->i_sem);
+        mutex_lock(&root->i_mutex);
         spufs_prune_dir(dir_dentry);
-        up(&root->i_sem);
+        mutex_unlock(&root->i_mutex);
 
         /* We have to give up the mm_struct */
         ctx = SPUFS_I(dir_dentry->d_inode)->i_ctx;
         spu_forget(ctx);
 
-        /* XXX Do we need to hold i_sem here ? */
+        /* XXX Do we need to hold i_mutex here ? */
         return simple_rmdir(root, dir_dentry);
 }
 
@@ -330,7 +330,7 @@ long spufs_create_thread(struct nameidata *nd,
 out_dput:
         dput(dentry);
 out_dir:
-        up(&nd->dentry->d_inode->i_sem);
+        mutex_unlock(&nd->dentry->d_inode->i_mutex);
 out:
         return ret;
 }