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[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>
This commit is contained in:
Paolo 'Blaisorblade' Giarrusso 2005-05-01 08:58:56 -07:00 committed by Linus Torvalds
parent b97b77cca6
commit ffa0aea681
1 changed files with 1 additions and 1 deletions
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2
fs/hostfs/hostfs_kern.c
View File

@ -521,7 +521,7 @@ int hostfs_commit_write(struct file *file, struct page *page, unsigned from,
static struct address_space_operations hostfs_aops = { static struct address_space_operations hostfs_aops = {
.writepage = hostfs_writepage, .writepage = hostfs_writepage,
.readpage = hostfs_readpage, .readpage = hostfs_readpage,
/* .set_page_dirty = __set_page_dirty_nobuffers, */ .set_page_dirty = __set_page_dirty_nobuffers,
.prepare_write = hostfs_prepare_write, .prepare_write = hostfs_prepare_write,
.commit_write = hostfs_commit_write .commit_write = hostfs_commit_write
}; };