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author | Eric W. Biederman <ebiederm@xmission.com> | 2007-11-28 16:21:26 -0800 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-29 09:24:52 -0800 |
commit | 19fd4bb2a0cfede054e4904e0b167e0ca4f36cc7 (patch) | |
tree | e37d0ee2c7ea08f6d8721a4e9e807f85994b608a /drivers/char/tpm | |
parent | c895078355b6b6e05c60aa205892526dd3390f0a (diff) | |
download | kernel_samsung_smdk4412-19fd4bb2a0cfede054e4904e0b167e0ca4f36cc7.zip kernel_samsung_smdk4412-19fd4bb2a0cfede054e4904e0b167e0ca4f36cc7.tar.gz kernel_samsung_smdk4412-19fd4bb2a0cfede054e4904e0b167e0ca4f36cc7.tar.bz2 |
proc: remove races from proc_id_readdir()
Oleg noticed that the call of task_pid_nr_ns() in proc_pid_readdir
is racy with respect to tasks exiting.
After a bit of examination it also appears that the call itself
is completely unnecessary.
So to fix the problem this patch modifies next_tgid() to return
both a tgid and the task struct in question.
A structure is introduced to return these values because it is
slightly cleaner and easier to optimize, and the resulting code
is a little shorter.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/tpm')
0 files changed, 0 insertions, 0 deletions