From: Jan Kara <jack@suse.cz>
Date: Tue, 6 Sep 2005 22:19:09 +0000 (-0700)
Subject: [PATCH] Fix JBD race in t_forget list handling
X-Git-Tag: v2.6.14-rc1~575
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6c9f5c1888097c936334bf9740024520ca47b8e;p=pandora-kernel.git

[PATCH] Fix JBD race in t_forget list handling

Fix race between journal_commit_transaction() and other places as
journal_unmap_buffer() that are adding buffers to transaction's t_forget list.
 We have to protect against such places by holding j_list_lock even when
traversing the t_forget list.  The fact that other places can only add buffers
to the list makes the locking easier.  OTOH the lock ranking complicates the
stuff...

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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