From: Evgeniy Dushistov <dushistov@mail.ru>
Date: Tue, 17 Apr 2007 05:53:24 +0000 (-0700)
Subject: ufs proper handling of zero link case
X-Git-Tag: v2.6.21~71
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07a0cfec30848319cc86f21cce0d2efeca593e1a;p=pandora-kernel.git

ufs proper handling of zero link case

This patch should fix or partly fix this bug:
http://bugzilla.kernel.org/show_bug.cgi?id=8276

The problem is:

- if we see "zero link case" during reading inode operation, we call
  ufs_error(which remount fs readonly), but not "mark" inode as bad (1)

- in readonly case we do not fill some data structures, which are used in
  read and write case (2)

- VFS call ufs_delete_inode if link count is zero (3)

so (1)->(3)->(2) cause oops, this patch should fix such scenario

Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Cc: Jim Paris <jim@jtan.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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