The patch below does not apply to the 3.7-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.
thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 66bea92c69477a75a5d37b9bfed5773c92a3c4b4 Mon Sep 17 00:00:00 2001 From: Eric Sandeen <[email protected]> Date: Wed, 14 Nov 2012 22:22:05 -0500 Subject: [PATCH] ext4: init pagevec in ext4_da_block_invalidatepages ext4_da_block_invalidatepages is missing a pagevec_init(), which means that pvec->cold contains random garbage. This affects whether the page goes to the front or back of the LRU when ->cold makes it to free_hot_cold_page() Reviewed-by: Lukas Czerner <[email protected]> Reviewed-by: Carlos Maiolino <[email protected]> Signed-off-by: Eric Sandeen <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]> Cc: [email protected] diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 7f9ccc1..52f7ff2 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1482,6 +1482,7 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd) last = end << (PAGE_CACHE_SHIFT - inode->i_blkbits); ext4_es_remove_extent(inode, start, last - start + 1); + pagevec_init(&pvec, 0); while (index <= end) { nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE); if (nr_pages == 0) -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
