[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, 4 insertions, 4 deletions

diff --git a/fs/libfs.c b/fs/libfs.c
index 9c50523382e7..63c020e6589e 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -74,7 +74,7 @@ int dcache_dir_close(struct inode *inode, struct file *file)
 
 loff_t dcache_dir_lseek(struct file *file, loff_t offset, int origin)
 {
-        down(&file->f_dentry->d_inode->i_sem);
+        mutex_lock(&file->f_dentry->d_inode->i_mutex);
         switch (origin) {
                 case 1:
                         offset += file->f_pos;
@@ -82,7 +82,7 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int origin)
                         if (offset >= 0)
                                 break;
                 default:
-                        up(&file->f_dentry->d_inode->i_sem);
+                        mutex_unlock(&file->f_dentry->d_inode->i_mutex);
                         return -EINVAL;
         }
         if (offset != file->f_pos) {
@@ -106,7 +106,7 @@ loff_t dcache_dir_lseek(struct file *file, loff_t offset, int origin)
                         spin_unlock(&dcache_lock);
                 }
         }
-        up(&file->f_dentry->d_inode->i_sem);
+        mutex_unlock(&file->f_dentry->d_inode->i_mutex);
         return offset;
 }
 
@@ -356,7 +356,7 @@ int simple_commit_write(struct file *file, struct page *page,
 
         /*
          * No need to use i_size_read() here, the i_size
-         * cannot change under us because we hold the i_sem.
+         * cannot change under us because we hold the i_mutex.
          */
         if (pos > inode->i_size)
                 i_size_write(inode, pos);