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Commit 619a9742 authored by David Sterba's avatar David Sterba
Browse files

btrfs: use clear_page where appropriate 



There's a helper to clear whole page, with a arch-specific optimized
code. The replaced cases do not seem to be in performace critical code,
but we still might get some percent gain.

Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent e501bfe3

fs/btrfs/free-space-cache.c

+1 −1
Original line number Diff line number Diff line
@@ -355,7 +355,7 @@ static void io_ctl_map_page(struct btrfs_io_ctl *io_ctl, int clear) 
	io_ctl->orig = io_ctl->cur;

	io_ctl->size = PAGE_SIZE;

	if (clear)

		memset(io_ctl->cur, 0, PAGE_SIZE);

		clear_page(io_ctl->cur);

}



static void io_ctl_drop_pages(struct btrfs_io_ctl *io_ctl)

fs/btrfs/scrub.c

+1 −1
Original line number Diff line number Diff line
@@ -1643,7 +1643,7 @@ static int scrub_write_page_to_dev_replace(struct scrub_block *sblock, 
	if (spage->io_error) {

		void *mapped_buffer = kmap_atomic(spage->page);



		memset(mapped_buffer, 0, PAGE_SIZE);

		clear_page(mapped_buffer);

		flush_dcache_page(spage->page);

		kunmap_atomic(mapped_buffer);

	}