Commit c2572f2b authored Apr 15, 2009 by Nick Piggin Committed by Jens Axboe Apr 15, 2009

brd: fix cacheflushing



brd is missing a flush_dcache_page. On 2nd thoughts, perhaps it is the
pagecache's responsibility to flush user virtual aliases (the driver of
course should flush kernel virtual mappings)... but anyway, there
already exists cache flushing for one direction of transfer, so we
should add the other.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent dfbc4752

drivers/block/brd.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -275,8 +275,10 @@ static int brd_do_bvec(struct brd_device brd, struct page page,
		if (rw == READ) {
		copy_from_brd(mem + off, brd, sector, len);
		flush_dcache_page(page);
		} else
		} else {
		flush_dcache_page(page);
		copy_to_brd(brd, mem + off, sector, len);
		}
		kunmap_atomic(mem, KM_USER0);

		out:

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