[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>

2 files changed, 16 insertions, 16 deletions

diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 954cf893d50c..be963a133aaa 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -121,9 +121,9 @@ out:
 static void
 nfsd4_sync_rec_dir(void)
 {
-        down(&rec_dir.dentry->d_inode->i_sem);
+        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
         nfsd_sync_dir(rec_dir.dentry);
-        up(&rec_dir.dentry->d_inode->i_sem);
+        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
 }
 
 int
@@ -143,7 +143,7 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
         nfs4_save_user(&uid, &gid);
 
         /* lock the parent */
-        down(&rec_dir.dentry->d_inode->i_sem);
+        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
 
         dentry = lookup_one_len(dname, rec_dir.dentry, HEXDIR_LEN-1);
         if (IS_ERR(dentry)) {
@@ -159,7 +159,7 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
 out_put:
         dput(dentry);
 out_unlock:
-        up(&rec_dir.dentry->d_inode->i_sem);
+        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
         if (status == 0) {
                 clp->cl_firststate = 1;
                 nfsd4_sync_rec_dir();
@@ -259,9 +259,9 @@ nfsd4_remove_clid_file(struct dentry *dir, struct dentry *dentry)
                 printk("nfsd4: non-file found in client recovery directory\n");
                 return -EINVAL;
         }
-        down(&dir->d_inode->i_sem);
+        mutex_lock(&dir->d_inode->i_mutex);
         status = vfs_unlink(dir->d_inode, dentry);
-        up(&dir->d_inode->i_sem);
+        mutex_unlock(&dir->d_inode->i_mutex);
         return status;
 }
 
@@ -274,9 +274,9 @@ nfsd4_clear_clid_dir(struct dentry *dir, struct dentry *dentry)
          * any regular files anyway, just in case the directory was created by
          * a kernel from the future.... */
         nfsd4_list_rec_dir(dentry, nfsd4_remove_clid_file);
-        down(&dir->d_inode->i_sem);
+        mutex_lock(&dir->d_inode->i_mutex);
         status = vfs_rmdir(dir->d_inode, dentry);
-        up(&dir->d_inode->i_sem);
+        mutex_unlock(&dir->d_inode->i_mutex);
         return status;
 }
 
@@ -288,9 +288,9 @@ nfsd4_unlink_clid_dir(char *name, int namlen)
 
         dprintk("NFSD: nfsd4_unlink_clid_dir. name %.*s\n", namlen, name);
 
-        down(&rec_dir.dentry->d_inode->i_sem);
+        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
         dentry = lookup_one_len(name, rec_dir.dentry, namlen);
-        up(&rec_dir.dentry->d_inode->i_sem);
+        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
         if (IS_ERR(dentry)) {
                 status = PTR_ERR(dentry);
                 return status;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index df4019f04560..bb36b4304491 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -390,12 +390,12 @@ set_nfsv4_acl_one(struct dentry *dentry, struct posix_acl *pacl, char *key)
 
         error = -EOPNOTSUPP;
         if (inode->i_op && inode->i_op->setxattr) {
-                down(&inode->i_sem);
+                mutex_lock(&inode->i_mutex);
                 security_inode_setxattr(dentry, key, buf, len, 0);
                 error = inode->i_op->setxattr(dentry, key, buf, len, 0);
                 if (!error)
                         security_inode_post_setxattr(dentry, key, buf, len, 0);
-                up(&inode->i_sem);
+                mutex_unlock(&inode->i_mutex);
         }
 out:
         kfree(buf);
@@ -739,9 +739,9 @@ nfsd_sync(struct file *filp)
         int err;
         struct inode *inode = filp->f_dentry->d_inode;
         dprintk("nfsd: sync file %s\n", filp->f_dentry->d_name.name);
-        down(&inode->i_sem);
+        mutex_lock(&inode->i_mutex);
         err=nfsd_dosync(filp, filp->f_dentry, filp->f_op);
-        up(&inode->i_sem);
+        mutex_unlock(&inode->i_mutex);
 
         return err;
 }
@@ -885,9 +885,9 @@ static void kill_suid(struct dentry *dentry)
         struct iattr    ia;
         ia.ia_valid = ATTR_KILL_SUID | ATTR_KILL_SGID;
 
-        down(&dentry->d_inode->i_sem);
+        mutex_lock(&dentry->d_inode->i_mutex);
         notify_change(dentry, &ia);
-        up(&dentry->d_inode->i_sem);
+        mutex_unlock(&dentry->d_inode->i_mutex);
 }
 
 static inline int