diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blkdev_compat.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/blkdev_compat.h b/include/linux/blkdev_compat.h index 3bf1f4574..0a7c985d8 100644 --- a/include/linux/blkdev_compat.h +++ b/include/linux/blkdev_compat.h @@ -339,6 +339,20 @@ bio_set_flags_failfast(struct block_device *bdev, int *flags) #endif /* + * 2.6.37 API change + * The WRITE_FLUSH, WRITE_FUA, and WRITE_FLUSH_FUA flags have been + * introduced as a replacement for WRITE_BARRIER. This was done to + * allow richer semantics to be expressed to the block layer. It is + * the block layers responsibility to choose the correct way to + * implement these semantics. + */ +#ifdef WRITE_FLUSH_FUA +# define VDEV_WRITE_FLUSH_FUA WRITE_FLUSH_FUA +#else +# define VDEV_WRITE_FLUSH_FUA WRITE_BARRIER +#endif + +/* * Default Linux IO Scheduler, * Setting the scheduler to noop will allow the Linux IO scheduler to * still perform front and back merging, while leaving the request |