[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>
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 0cea978..de59c58 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -1891,7 +1891,7 @@
return -EINVAL;
inode = filp->f_dentry->d_inode;
- down(&inode->i_sem);
+ mutex_lock(&inode->i_mutex);
current->flags |= PF_SYNCWRITE;
rc = filemap_fdatawrite(inode->i_mapping);
err = filp->f_op->fsync(filp, filp->f_dentry, 1);
@@ -1901,7 +1901,7 @@
if (!rc)
rc = err;
current->flags &= ~PF_SYNCWRITE;
- up(&inode->i_sem);
+ mutex_unlock(&inode->i_mutex);
VLDBG(curlun, "fdatasync -> %d\n", rc);
return rc;
}
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 5c40980..c6c279d 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1562,10 +1562,10 @@
spin_unlock_irq (&dev->lock);
/* break link to dcache */
- down (&parent->i_sem);
+ mutex_lock (&parent->i_mutex);
d_delete (dentry);
dput (dentry);
- up (&parent->i_sem);
+ mutex_unlock (&parent->i_mutex);
/* fds may still be open */
goto restart;