From: Paolo 'Blaisorblade' Giarrusso <[email protected]>
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 <[email protected]>
---
linux-2.6.12-paolo/fs/hostfs/hostfs_kern.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN fs/hostfs/hostfs_kern.c~uml-hostfs-avoid-buffers fs/hostfs/hostfs_kern.c
--- linux-2.6.12/fs/hostfs/hostfs_kern.c~uml-hostfs-avoid-buffers 2005-04-24 20:17:05.000000000 +0200
+++ linux-2.6.12-paolo/fs/hostfs/hostfs_kern.c 2005-04-24 20:17:05.000000000 +0200
@@ -521,7 +521,7 @@ int hostfs_commit_write(struct file *fil
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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