From: Alan Stern <stern@rowland.harvard.edu>
Date: Wed, 4 Oct 2006 09:17:05 +0000 (-0700)
Subject: [PATCH] SRCU: report out-of-memory errors
X-Git-Tag: v2.6.19-rc1~55
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6a92013ba458804161c0c5b6d134d82204dc233;p=pandora-kernel.git

[PATCH] SRCU: report out-of-memory errors

Currently the init_srcu_struct() routine has no way to report out-of-memory
errors.  This patch (as761) makes it return -ENOMEM when the per-cpu data
allocation fails.

The patch also makes srcu_init_notifier_head() report a BUG if a notifier
head can't be initialized.  Perhaps it should return -ENOMEM instead, but
in the most likely cases where this might occur I don't think any recovery
is possible.  Notifier chains generally are not created dynamically.

[akpm@osdl.org: avoid statement-with-side-effect in macro]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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