From: Andy Grover <andy.grover@oracle.com>
Date: Sat, 20 Feb 2010 02:01:41 +0000 (-0800)
Subject: RDS: Rewrite rds_send_drop_to() for clarity
X-Git-Tag: v2.6.37-rc1~147^2~499^2~104
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c82eaf00ec7d460932be9314b29997006b799b6;p=pandora-kernel.git

RDS: Rewrite rds_send_drop_to() for clarity

This function has been the source of numerous bugs; it's just
too complicated. Simplified to nest spinlocks cleanly within
the second loop body, and kick out early if there are no
rms to drop.

This will be a little slower because conn lock is grabbed for
each entry instead of "caching" the lock across rms, but this
should be entirely irrelevant to fastpath performance.

Signed-off-by: Andy Grover <andy.grover@oracle.com>
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