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| author | Monakhov Dmitriy <dmonakhov@openvz.org> | 2006-10-11 01:22:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 11:14:23 -0700 |
| commit | 8c58165108e26d18849a0138c719e680f281197a (patch) | |
| tree | ff5e54e11357867ef3e8edfa9df8de25a688afdc /fs/buffer.c | |
| parent | 97e860d364aa9d08e895ecb619b9122ae2c70df8 (diff) | |
| download | lwn-8c58165108e26d18849a0138c719e680f281197a.tar.gz lwn-8c58165108e26d18849a0138c719e680f281197a.zip | |
[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" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 2 |
1 files changed, 2 insertions, 0 deletions
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); |