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authorOleg Nesterov <oleg@redhat.com>2012-08-26 21:12:14 +0200
committerIngo Molnar <mingo@kernel.org>2012-09-13 16:47:36 +0200
commitb3f68f16dbcde6fcdf0fd27695391ff7e9d41233 (patch)
tree26833634b038b8fd9d18f109deb10770eb3f2a6e /crypto/api.c
parent9da33de62431c7839f98156720862262272a8380 (diff)
task_work: Revert "hold task_lock around checks in keyctl"
This reverts commit d35abdb28824cf74f0a106a0f9c6f3ff700a35bf. task_lock() was added to ensure exit_mm() and thus exit_task_work() is not possible before task_work_add(). This is wrong, task_lock() must not be nested with write_lock(tasklist). And this is no longer needed, task_work_add() now fails if it is called after exit_task_work(). Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20120826191214.GA4231@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'crypto/api.c')
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