diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-02-02 20:43:54 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-03-03 01:43:42 +0100 |
| commit | 74444edaa0b2ef946e846d5ddf1ba90efcd7c200 (patch) | |
| tree | 45c35c2f9a62064b28c629675287a70d86a4e475 /include/linux/sched/mm.h | |
| parent | 2a1f062a4acf0be50516ceece92a7182a173d55a (diff) | |
sched/headers: Move the memalloc_noio_*() APIs to <linux/sched/mm.h>
In preparation to remove the <linux/gfp.h> include from <linux/sched.h>.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched/mm.h')
| -rw-r--r-- | include/linux/sched/mm.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h index 64d83fa8d93a..62dca4e0b4e0 100644 --- a/include/linux/sched/mm.h +++ b/include/linux/sched/mm.h @@ -147,4 +147,26 @@ static inline bool in_vfork(struct task_struct *tsk) return ret; } +/* __GFP_IO isn't allowed if PF_MEMALLOC_NOIO is set in current->flags + * __GFP_FS is also cleared as it implies __GFP_IO. + */ +static inline gfp_t memalloc_noio_flags(gfp_t flags) +{ + if (unlikely(current->flags & PF_MEMALLOC_NOIO)) + flags &= ~(__GFP_IO | __GFP_FS); + return flags; +} + +static inline unsigned int memalloc_noio_save(void) +{ + unsigned int flags = current->flags & PF_MEMALLOC_NOIO; + current->flags |= PF_MEMALLOC_NOIO; + return flags; +} + +static inline void memalloc_noio_restore(unsigned int flags) +{ + current->flags = (current->flags & ~PF_MEMALLOC_NOIO) | flags; +} + #endif /* _LINUX_SCHED_MM_H */ |