From ffa0aea681a5f3c8aecbb86f1cfd3486043805de Mon Sep 17 00:00:00 2001
From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Date: Sun, 1 May 2005 08:58:56 -0700
Subject: [PATCH] uml - hostfs: avoid buffers
Use this:
.set_page_dirty = __set_page_dirty_nobuffers,
We already dropped the inclusion of <linux/buffer_head.h>, and we don't have a
backing block device for this FS.
"Without having looked at it, I'm sure that hostfs does not use buffer_heads.
So setting your ->set_page_dirty a_op to point at __set_page_dirty_nobuffers()
is a reasonable thing to do - it'll provide a slight speedup."
This speedup is one less spinlock held and one less conditional branch, which
isn't bad.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
fs/hostfs/hostfs_kern.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'fs')
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index a88ad29248..e6c63d9cac 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -521,7 +521,7 @@ int hostfs_commit_write(struct file *file, struct page *page, unsigned from,
static struct address_space_operations hostfs_aops = {
.writepage = hostfs_writepage,
.readpage = hostfs_readpage,
-/* .set_page_dirty = __set_page_dirty_nobuffers, */
+ .set_page_dirty = __set_page_dirty_nobuffers,
.prepare_write = hostfs_prepare_write,
.commit_write = hostfs_commit_write
};
--
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