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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2011-06-26 23:20:55 +0900
committerJames Morris <jmorris@namei.org>2011-06-29 09:31:21 +1000
commit2e503bbb435ae418aebbe4aeede1c6f2a33d6f74 (patch)
treec6b783c245716cf87b337b2a855e742133afb7ac /Documentation/java.txt
parent5625f2e3266319fd29fe4f1c76ccd3f550c79ac4 (diff)
TOMOYO: Fix lockdep warning.
Currently TOMOYO holds SRCU lock upon open() and releases it upon close() because list elements stored in the "struct tomoyo_io_buffer" instances are accessed until close() is called. However, such SRCU usage causes lockdep to complain about leaving the kernel with SRCU lock held. This patch solves the warning by holding/releasing SRCU upon each read()/write(). This patch is doing something similar to calling kfree() without calling synchronize_srcu(), by selectively deferring kfree() by keeping track of the "struct tomoyo_io_buffer" instances. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
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