[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, 5 insertions, 5 deletions

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index eab64e23bcae..2a75e44e1a41 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1513,7 +1513,7 @@ static int cpuset_add_file(struct dentry *dir, const struct cftype *cft)
         struct dentry *dentry;
         int error;
 
-        down(&dir->d_inode->i_sem);
+        mutex_lock(&dir->d_inode->i_mutex);
         dentry = cpuset_get_dentry(dir, cft->name);
         if (!IS_ERR(dentry)) {
                 error = cpuset_create_file(dentry, 0644 | S_IFREG);
@@ -1522,7 +1522,7 @@ static int cpuset_add_file(struct dentry *dir, const struct cftype *cft)
                 dput(dentry);
         } else
                 error = PTR_ERR(dentry);
-        up(&dir->d_inode->i_sem);
+        mutex_unlock(&dir->d_inode->i_mutex);
         return error;
 }
 
@@ -1793,7 +1793,7 @@ static long cpuset_create(struct cpuset *parent, const char *name, int mode)
 
         /*
          * Release manage_sem before cpuset_populate_dir() because it
-         * will down() this new directory's i_sem and if we race with
+         * will down() this new directory's i_mutex and if we race with
          * another mkdir, we might deadlock.
          */
         up(&manage_sem);
@@ -1812,7 +1812,7 @@ static int cpuset_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 {
         struct cpuset *c_parent = dentry->d_parent->d_fsdata;
 
-        /* the vfs holds inode->i_sem already */
+        /* the vfs holds inode->i_mutex already */
         return cpuset_create(c_parent, dentry->d_name.name, mode | S_IFDIR);
 }
 
@@ -1823,7 +1823,7 @@ static int cpuset_rmdir(struct inode *unused_dir, struct dentry *dentry)
         struct cpuset *parent;
         char *pathbuf = NULL;
 
-        /* the vfs holds both inode->i_sem already */
+        /* the vfs holds both inode->i_mutex already */
 
         down(&manage_sem);
         cpuset_update_task_memory_state();