[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/mm/memory.c b/mm/memory.c
index 3944fec..7a11ddd 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1784,13 +1784,13 @@
if (!inode->i_op || !inode->i_op->truncate_range)
return -ENOSYS;
- down(&inode->i_sem);
+ mutex_lock(&inode->i_mutex);
down_write(&inode->i_alloc_sem);
unmap_mapping_range(mapping, offset, (end - offset), 1);
truncate_inode_pages_range(mapping, offset, end);
inode->i_op->truncate_range(inode, offset, end);
up_write(&inode->i_alloc_sem);
- up(&inode->i_sem);
+ mutex_unlock(&inode->i_mutex);
return 0;
}