[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/fs/buffer.c b/fs/buffer.c
index 55f0975a9b15..6466bc8a3dc7 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -352,11 +352,11 @@ static long do_fsync(unsigned int fd, int datasync)
          * We need to protect against concurrent writers,
          * which could cause livelocks in fsync_buffers_list
          */
-        down(&mapping->host->i_sem);
+        mutex_lock(&mapping->host->i_mutex);
         err = file->f_op->fsync(file, file->f_dentry, datasync);
         if (!ret)
                 ret = err;
-        up(&mapping->host->i_sem);
+        mutex_unlock(&mapping->host->i_mutex);
         err = filemap_fdatawait(mapping);
         if (!ret)
                 ret = err;
@@ -2338,7 +2338,7 @@ int generic_commit_write(struct file *file, struct page *page,
         __block_commit_write(inode,page,from,to);
         /*
          * No need to use i_size_read() here, the i_size
-         * cannot change under us because we hold i_sem.
+         * cannot change under us because we hold i_mutex.
          */
         if (pos > inode->i_size) {
                 i_size_write(inode, pos);