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Date: Wed, 4 Nov 2015 15:58:34 +0800 From: yalin wang <yalin.wang2010@...il.com> To: tytso@....edu, adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org Cc: yalin wang <yalin.wang2010@...il.com> Subject: [RFC] ext4: fix a BUG in ext4_mpage_readpages() The last block should be the total read pages last block, need adjust the block number when caculate every page. Signed-off-by: yalin wang <yalin.wang2010@...il.com> --- fs/ext4/readpage.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c index 5dc5e95..d20c39d 100644 --- a/fs/ext4/readpage.c +++ b/fs/ext4/readpage.c @@ -174,7 +174,7 @@ int ext4_mpage_readpages(struct address_space *mapping, goto confused; block_in_file = (sector_t)page->index << (PAGE_CACHE_SHIFT - blkbits); - last_block = block_in_file + nr_pages * blocks_per_page; + last_block = block_in_file + (nr_pages - page_idx) * blocks_per_page; last_block_in_file = (i_size_read(inode) + blocksize - 1) >> blkbits; if (last_block > last_block_in_file) last_block = last_block_in_file; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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