forked from luck/tmp_suning_uos_patched
137d1a26c8
Checking for task->mm is dangerous as ->mm might disappear (exit_mm() assigns NULL under task_lock(), so tasklist lock is not enough). We can't use get_task_mm()/mmput() pair as mmput() might sleep, so let's take the task lock while we care about its mm. Note that we should also use find_lock_task_mm() to check all process' threads for a valid mm, but for uml we'll do it in a separate patch. Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Cc: Richard Weinberger <richard@nod.at> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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drivers | ||
include | ||
kernel | ||
os-Linux | ||
scripts | ||
sys-ia64 | ||
sys-ppc | ||
.gitignore | ||
defconfig | ||
Kconfig.char | ||
Kconfig.common | ||
Kconfig.debug | ||
Kconfig.net | ||
Kconfig.rest | ||
Kconfig.um | ||
Makefile | ||
Makefile-ia64 | ||
Makefile-os-Linux | ||
Makefile-ppc | ||
Makefile-skas |