Commit f5ce5a08 authored Aug 12, 2010 by Sunil Mushran Committed by Tao Ma Sep 08, 2010

ocfs2: Fix incorrect checksum validation error

For local mounts, ocfs2_read_locked_inode() calls ocfs2_read_blocks_sync() to
read the inode off the disk. The latter first checks to see if that block is
cached in the journal, and, if so, returns that block. That is ok.

But ocfs2_read_locked_inode() goes wrong when it tries to validate the checksum
of such blocks. Blocks that are cached in the journal may not have had their
checksum computed as yet. We should not validate the checksums of such blocks.

Fixes ossbz#1282
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1282



Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Cc: stable@kernel.org
Singed-off-by: Tao Ma <tao.ma@oracle.com>

parent dc696ace

fs/ocfs2/inode.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -488,7 +488,11 @@ static int ocfs2_read_locked_inode(struct inode *inode,
		OCFS2_BH_IGNORE_CACHE);
		} else {
		status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh);
		if (!status)
		/*
		* If buffer is in jbd, then its checksum may not have been
		* computed as yet.
		*/
		if (!status && !buffer_jbd(bh))
		status = ocfs2_validate_inode_block(osb->sb, bh);
		}
		if (status < 0) {

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