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Commit ffa0aea6 authored by Paolo 'Blaisorblade' Giarrusso's avatar Paolo 'Blaisorblade' Giarrusso Committed by Linus Torvalds
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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: default avatarPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent b97b77cc

fs/hostfs/hostfs_kern.c

+1 −1
Original line number Diff line number Diff line
@@ -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

};