diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bio.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index ce34ea49ef35..e8f5b7938a7f 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -368,6 +368,21 @@ static inline struct bio *bio_alloc(struct block_device *bdev, void submit_bio(struct bio *bio); +/** + * bio_in_atomic - check if the current context is unsafe for bio completion + * + * Return: %true in atomic contexts (e.g. hard/soft IRQ, preempt-disabled); + * %false when a bio can be safely completed in the current context. + */ +static inline bool bio_in_atomic(void) +{ + if (IS_ENABLED(CONFIG_PREEMPTION) && rcu_preempt_depth()) + return true; + if (!IS_ENABLED(CONFIG_PREEMPT_COUNT)) + return true; + return !preemptible(); +} + extern void bio_endio(struct bio *); /** |