From: NeilBrown <neilb@cse.unsw.edu.au>
Date: Sat, 16 Apr 2005 22:26:41 +0000 (-0700)
Subject: [PATCH] md: close a small race in md thread deregistration
X-Git-Tag: v2.6.12-rc3~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d28446fe2d87ea344c14741c39962dcc7aee5c78;p=pandora-kernel.git

[PATCH] md: close a small race in md thread deregistration

There is a tiny race when de-registering an MD thread, in that the thread
could disappear before it is set a SIGKILL, causing send_sig to have
problems.

This is most easily closed by holding tasklist_lock between enabling the
thread to exit (setting ->run to NULL) and telling it to exit.

(akpm: ick.  Needs to use kthread API and stop using signals)

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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