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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2011-06-26 23:20:55 +0900 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2011-06-29 09:31:21 +1000 |
| commit | 2e503bbb435ae418aebbe4aeede1c6f2a33d6f74 (patch) | |
| tree | c6b783c245716cf87b337b2a855e742133afb7ac /lib/string_helpers.c | |
| parent | 5625f2e3266319fd29fe4f1c76ccd3f550c79ac4 (diff) | |
| download | blackbird-op-linux-2e503bbb435ae418aebbe4aeede1c6f2a33d6f74.tar.gz blackbird-op-linux-2e503bbb435ae418aebbe4aeede1c6f2a33d6f74.zip | |
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>
Diffstat (limited to 'lib/string_helpers.c')
0 files changed, 0 insertions, 0 deletions
