[PATCH] sem2mutex: vfs_rename_mutex

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

10 files changed, 42 insertions, 42 deletions

diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index fed55e3c53df..632561dd9c50 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -138,9 +138,9 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -317,9 +317,9 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
         if(full_path == NULL)
                 rc = -ENOMEM;
         else if (pTcon->ses->capabilities & CAP_UNIX) {
diff --git a/fs/cifs/fcntl.c b/fs/cifs/fcntl.c
index a7a47bb36bf3..ec4dfe9bf5ef 100644
--- a/fs/cifs/fcntl.c
+++ b/fs/cifs/fcntl.c
@@ -86,9 +86,9 @@ int cifs_dir_notify(struct file * file, unsigned long arg)
         cifs_sb = CIFS_SB(file->f_dentry->d_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&file->f_dentry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(file->f_dentry);
-        up(&file->f_dentry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
 
         if(full_path == NULL) {
                 rc = -ENOMEM;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 675bd2568297..165d67426381 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -203,9 +203,9 @@ int cifs_open(struct inode *inode, struct file *file)
                 }
         }
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(file->f_dentry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 59359911f481..ff93a9f81d1c 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -574,9 +574,9 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
 
         /* Unlink can be called from rename so we can not grab the sem here
            since we deadlock otherwise */
-/*      down(&direntry->d_sb->s_vfs_rename_sem);*/
+/*      mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
         full_path = build_path_from_dentry(direntry);
-/*      up(&direntry->d_sb->s_vfs_rename_sem);*/
+/*      mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -718,9 +718,9 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -803,9 +803,9 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -1137,9 +1137,9 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
                         rc = 0;
         }
                 
-        down(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
         if (full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 0f99aae33162..8d0da7c87c7b 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -48,10 +48,10 @@ cifs_hardlink(struct dentry *old_file, struct inode *inode,
 /* No need to check for cross device links since server will do that
    BB note DFS case in future though (when we may have to check) */
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         fromName = build_path_from_dentry(old_file);
         toName = build_path_from_dentry(direntry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
         if((fromName == NULL) || (toName == NULL)) {
                 rc = -ENOMEM;
                 goto cifs_hl_exit;
@@ -103,9 +103,9 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
 
         xid = GetXid();
 
-        down(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&direntry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
 
         if (!full_path)
                 goto out_no_free;
@@ -164,9 +164,9 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
         cifs_sb = CIFS_SB(inode->i_sb);
         pTcon = cifs_sb->tcon;
 
-        down(&inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&inode->i_sb->s_vfs_rename_sem);
+        mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
 
         if(full_path == NULL) {
                 FreeXid(xid);
@@ -232,9 +232,9 @@ cifs_readlink(struct dentry *direntry, char __user *pBuffer, int buflen)
 
 /* BB would it be safe against deadlock to grab this sem 
       even though rename itself grabs the sem and calls lookup? */
-/*       down(&inode->i_sb->s_vfs_rename_sem);*/
+/*       mutex_lock(&inode->i_sb->s_vfs_rename_mutex);*/
         full_path = build_path_from_dentry(direntry);
-/*       up(&inode->i_sb->s_vfs_rename_sem);*/
+/*       mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);*/
 
         if(full_path == NULL) {
                 FreeXid(xid);
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 288cc048d37f..edb3b6eb34bc 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -404,9 +404,9 @@ static int initiate_cifs_search(const int xid, struct file *file)
         if(pTcon == NULL)
                 return -EINVAL;
 
-        down(&file->f_dentry->d_sb->s_vfs_rename_sem);
+        mutex_lock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(file->f_dentry);
-        up(&file->f_dentry->d_sb->s_vfs_rename_sem);
+        mutex_unlock(&file->f_dentry->d_sb->s_vfs_rename_mutex);
 
         if(full_path == NULL) {
                 return -ENOMEM;
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index 777e3363c2a4..3938444d87b2 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -62,9 +62,9 @@ int cifs_removexattr(struct dentry * direntry, const char * ea_name)
         cifs_sb = CIFS_SB(sb);
         pTcon = cifs_sb->tcon;
                                                                                      
-        down(&sb->s_vfs_rename_sem);
+        mutex_lock(&sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&sb->s_vfs_rename_sem);
+        mutex_unlock(&sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -116,9 +116,9 @@ int cifs_setxattr(struct dentry * direntry, const char * ea_name,
         cifs_sb = CIFS_SB(sb);
         pTcon = cifs_sb->tcon;
 
-        down(&sb->s_vfs_rename_sem);
+        mutex_lock(&sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&sb->s_vfs_rename_sem);
+        mutex_unlock(&sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -223,9 +223,9 @@ ssize_t cifs_getxattr(struct dentry * direntry, const char * ea_name,
         cifs_sb = CIFS_SB(sb);
         pTcon = cifs_sb->tcon;
 
-        down(&sb->s_vfs_rename_sem);
+        mutex_lock(&sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&sb->s_vfs_rename_sem);
+        mutex_unlock(&sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
@@ -341,9 +341,9 @@ ssize_t cifs_listxattr(struct dentry * direntry, char * data, size_t buf_size)
         cifs_sb = CIFS_SB(sb);
         pTcon = cifs_sb->tcon;
 
-        down(&sb->s_vfs_rename_sem);
+        mutex_lock(&sb->s_vfs_rename_mutex);
         full_path = build_path_from_dentry(direntry);
-        up(&sb->s_vfs_rename_sem);
+        mutex_unlock(&sb->s_vfs_rename_mutex);
         if(full_path == NULL) {
                 FreeXid(xid);
                 return -ENOMEM;
diff --git a/fs/namei.c b/fs/namei.c
index 8dc2b038d5d9..c72b940797fc 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -104,7 +104,7 @@
  */
 /*
  * [Sep 2001 AV] Single-semaphore locking scheme (kudos to David Holland)
- * implemented.  Let's see if raised priority of ->s_vfs_rename_sem gives
+ * implemented.  Let's see if raised priority of ->s_vfs_rename_mutex gives
  * any extra contention...
  */
 
@@ -1422,7 +1422,7 @@ struct dentry *lock_rename(struct dentry *p1, struct dentry *p2)
                 return NULL;
         }
 
-        down(&p1->d_inode->i_sb->s_vfs_rename_sem);
+        mutex_lock(&p1->d_inode->i_sb->s_vfs_rename_mutex);
 
         for (p = p1; p->d_parent != p; p = p->d_parent) {
                 if (p->d_parent == p2) {
@@ -1450,7 +1450,7 @@ void unlock_rename(struct dentry *p1, struct dentry *p2)
         mutex_unlock(&p1->d_inode->i_mutex);
         if (p1 != p2) {
                 mutex_unlock(&p2->d_inode->i_mutex);
-                up(&p1->d_inode->i_sb->s_vfs_rename_sem);
+                mutex_unlock(&p1->d_inode->i_sb->s_vfs_rename_mutex);
         }
 }
 
@@ -2277,17 +2277,17 @@ asmlinkage long sys_link(const char __user *oldname, const char __user *newname)
  *      a) we can get into loop creation. Check is done in is_subdir().
  *      b) race potential - two innocent renames can create a loop together.
  *         That's where 4.4 screws up. Current fix: serialization on
- *         sb->s_vfs_rename_sem. We might be more accurate, but that's another
+ *         sb->s_vfs_rename_mutex. We might be more accurate, but that's another
  *         story.
  *      c) we have to lock _three_ objects - parents and victim (if it exists).
  *         And that - after we got ->i_mutex on parents (until then we don't know
  *         whether the target exists).  Solution: try to be smart with locking
  *         order for inodes.  We rely on the fact that tree topology may change
- *         only under ->s_vfs_rename_sem _and_ that parent of the object we
+ *         only under ->s_vfs_rename_mutex _and_ that parent of the object we
  *         move will be locked.  Thus we can rank directories by the tree
  *         (ancestors first) and rank all non-directories after them.
  *         That works since everybody except rename does "lock parent, lookup,
- *         lock child" and rename is under ->s_vfs_rename_sem.
+ *         lock child" and rename is under ->s_vfs_rename_mutex.
  *         HOWEVER, it relies on the assumption that any object with ->lookup()
  *         has no more than 1 dentry.  If "hybrid" objects will ever appear,
  *         we'd better make sure that there's no link(2) for them.
diff --git a/fs/super.c b/fs/super.c
index 9cc6545dfa4c..425861cb1caa 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -76,7 +76,7 @@ static struct super_block *alloc_super(void)
                 down_write(&s->s_umount);
                 s->s_count = S_BIAS;
                 atomic_set(&s->s_active, 1);
-                sema_init(&s->s_vfs_rename_sem,1);
+                mutex_init(&s->s_vfs_rename_mutex);
                 mutex_init(&s->s_dquot.dqio_mutex);
                 mutex_init(&s->s_dquot.dqonoff_mutex);
                 init_rwsem(&s->s_dquot.dqptr_sem);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9ed1f36b6d54..0f71ee730127 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -847,7 +847,7 @@ struct super_block {
          * The next field is for VFS *only*. No filesystems have any business
          * even looking at it. You had been warned.
          */
-        struct semaphore s_vfs_rename_sem;      /* Kludge */
+        struct mutex s_vfs_rename_mutex;        /* Kludge */
 
         /* Granuality of c/m/atime in ns.
            Cannot be worse than a second */