From 8c58165108e26d18849a0138c719e680f281197a Mon Sep 17 00:00:00 2001 From: Monakhov Dmitriy Date: Wed, 11 Oct 2006 01:22:00 -0700 Subject: [PATCH] [PATCH] D-cache aliasing issue in __block_prepare_write A couple of flush_dcache_page()s are missing on the I/O-error paths. Cc: "David S. Miller" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/buffer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/buffer.c b/fs/buffer.c index 2a7828c0e59b..f65ef8821c73 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1854,6 +1854,7 @@ static int __block_prepare_write(struct inode *inode, struct page *page, clear_buffer_new(bh); kaddr = kmap_atomic(page, KM_USER0); memset(kaddr+block_start, 0, bh->b_size); + flush_dcache_page(page); kunmap_atomic(kaddr, KM_USER0); set_buffer_uptodate(bh); mark_buffer_dirty(bh); @@ -2360,6 +2361,7 @@ failed: */ kaddr = kmap_atomic(page, KM_USER0); memset(kaddr, 0, PAGE_CACHE_SIZE); + flush_dcache_page(page); kunmap_atomic(kaddr, KM_USER0); SetPageUptodate(page); set_page_dirty(page); -- 2.20.1