diff options
| author | Martin K. Petersen <martin.petersen@oracle.com> | 2012-09-18 12:19:29 -0400 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-09-20 08:31:53 -0400 |
| commit | 66ba32dc167202c3cf8c86806581a9393ec7f488 (patch) | |
| tree | 61bc596fd84f48a47a28a593435b437371607d6f /include/linux/fs.h | |
| parent | 579e8f3c7b2ecf7db91398d942d76457a3ddba21 (diff) | |
block: ioctl to zero block ranges
Introduce a BLKZEROOUT ioctl which can be used to clear block ranges by
way of blkdev_issue_zeroout().
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index aa110476a95b..bd6f6e7ca48e 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h | |||
| @@ -335,6 +335,7 @@ struct inodes_stat_t { | |||
| 335 | #define BLKDISCARDZEROES _IO(0x12,124) | 335 | #define BLKDISCARDZEROES _IO(0x12,124) |
| 336 | #define BLKSECDISCARD _IO(0x12,125) | 336 | #define BLKSECDISCARD _IO(0x12,125) |
| 337 | #define BLKROTATIONAL _IO(0x12,126) | 337 | #define BLKROTATIONAL _IO(0x12,126) |
| 338 | #define BLKZEROOUT _IO(0x12,127) | ||
| 338 | 339 | ||
| 339 | #define BMAP_IOCTL 1 /* obsolete - kept for compatibility */ | 340 | #define BMAP_IOCTL 1 /* obsolete - kept for compatibility */ |
| 340 | #define FIBMAP _IO(0x00,1) /* bmap access */ | 341 | #define FIBMAP _IO(0x00,1) /* bmap access */ |