[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, 3 insertions, 3 deletions

diff --git a/mm/shmem.c b/mm/shmem.c
index a1f2f02af724..343b3c0937e5 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1370,7 +1370,7 @@ shmem_file_write(struct file *file, const char __user *buf, size_t count, loff_t
         if (!access_ok(VERIFY_READ, buf, count))
                 return -EFAULT;
 
-        down(&inode->i_sem);
+        mutex_lock(&inode->i_mutex);
 
         pos = *ppos;
         written = 0;
@@ -1455,7 +1455,7 @@ shmem_file_write(struct file *file, const char __user *buf, size_t count, loff_t
         if (written)
                 err = written;
 out:
-        up(&inode->i_sem);
+        mutex_unlock(&inode->i_mutex);
         return err;
 }
 
@@ -1491,7 +1491,7 @@ static void do_shmem_file_read(struct file *filp, loff_t *ppos, read_descriptor_
 
                 /*
                  * We must evaluate after, since reads (unlike writes)
-                 * are called without i_sem protection against truncate
+                 * are called without i_mutex protection against truncate
                  */
                 nr = PAGE_CACHE_SIZE;
                 i_size = i_size_read(inode);