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[PATCH] D-cache aliasing issue in __block_prepare_write

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A couple of flush_dcache_page()s are missing on the I/O-error paths.

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Monakhov Dmitriy 2006-10-11 01:22:00 -07:00 committed by Linus Torvalds
parent 97e860d364
commit 8c58165108
1 changed files with 2 additions and 0 deletions
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2
fs/buffer.c
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@ -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 @@ int nobh_prepare_write(struct page *page, unsigned from, unsigned to,
*/
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);