From: Nick Piggin Date: Tue, 6 Jan 2009 22:39:06 +0000 (-0800) Subject: mm: write_cache_pages writepage error fix X-Git-Tag: v2.6.27.13~11 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c53e887db7e2520d2f0f8cd7794cf90b3f553823;p=pandora-kernel.git mm: write_cache_pages writepage error fix commit 00266770b8b3a6a77f896ca501a0613739086832 upstream. In write_cache_pages, if ret signals a real error, but we still have some pages left in the pagevec, done would be set to 1, but the remaining pages would continue to be processed and ret will be overwritten in the process. It could easily be overwritten with success, and thus success will be returned even if there is an error. Thus the caller is told all writes succeeded, wheras in reality some did not. Fix this by bailing immediately if there is an error, and retaining the first error code. This is a data integrity bug. Signed-off-by: Nick Piggin Cc: Chris Mason Cc: Dave Chinner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed