From: Goldwyn Rodrigues <rgold...@suse.de>
Subject: ocfs2: clear the rest of the buffers on error

In case a validation fails, clear the rest of the buffers and return the
error to the calling function.

This also facilitates bubbling up the error originating from ocfs2_error
to calling functions.

Signed-off-by: Goldwyn Rodrigues <rgold...@suse.com>
Cc: Mark Fasheh <mfas...@suse.com>
Cc: Joel Becker <jl...@evilplan.org>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
---

 fs/ocfs2/buffer_head_io.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff -puN fs/ocfs2/buffer_head_io.c~clear-the-rest-of-the-buffers-on-error 
fs/ocfs2/buffer_head_io.c
--- a/fs/ocfs2/buffer_head_io.c~clear-the-rest-of-the-buffers-on-error
+++ a/fs/ocfs2/buffer_head_io.c
@@ -316,6 +316,12 @@ int ocfs2_read_blocks(struct ocfs2_cachi
                bh = bhs[i];
 
                if (!(flags & OCFS2_BH_READAHEAD)) {
+                       if (status) {
+                               /* Clear the rest of the buffers on error */
+                               put_bh(bh);
+                               bhs[i] = NULL;
+                               continue;
+                       }
                        /* We know this can't have changed as we hold the
                         * owner sem. Avoid doing any work on the bh if the
                         * journal has it. */
_

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