diff options
Diffstat (limited to 'include/linux/uio.h')
| -rw-r--r-- | include/linux/uio.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h index 15f11fb9fff6..8b01e1c3c614 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h | |||
| @@ -112,6 +112,14 @@ static inline bool iter_is_iovec(struct iov_iter *i) | |||
| 112 | } | 112 | } |
| 113 | 113 | ||
| 114 | /* | 114 | /* |
| 115 | * Get one of READ or WRITE out of iter->type without any other flags OR'd in | ||
| 116 | * with it. | ||
| 117 | * | ||
| 118 | * The ?: is just for type safety. | ||
| 119 | */ | ||
| 120 | #define iov_iter_rw(i) ((0 ? (struct iov_iter *)0 : (i))->type & RW_MASK) | ||
| 121 | |||
| 122 | /* | ||
| 115 | * Cap the iov_iter by given limit; note that the second argument is | 123 | * Cap the iov_iter by given limit; note that the second argument is |
| 116 | * *not* the new size - it's upper limit for such. Passing it a value | 124 | * *not* the new size - it's upper limit for such. Passing it a value |
| 117 | * greater than the amount of data in iov_iter is fine - it'll just do | 125 | * greater than the amount of data in iov_iter is fine - it'll just do |