diff options
| author | Christoph Hellwig <hch@lst.de> | 2014-09-06 16:08:05 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-10-21 14:02:54 -0600 |
| commit | 34b48db66e08ca1c1bc07cf305d672ac940268dc (patch) | |
| tree | 06fc3e6639a492eb14c326bd8697c1ba9907c9da /include/linux/blkdev.h | |
| parent | c2661b806092d8ea2dccb7b02b65776555e0ee47 (diff) | |
block: remove artifical max_hw_sectors cap
Set max_sectors to the value the drivers provides as hardware limit by
default. Linux had proper I/O throttling for a long time and doesn't
rely on a artifically small maximum I/O size anymore. By not limiting
the I/O size by default we remove an annoying tuning step required for
most Linux installation.
Note that both the user, and if absolutely required the driver can still
impose a limit for FS requests below max_hw_sectors_kb.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 0207a78a8d82..74d14dba6fb7 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1186,7 +1186,6 @@ extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm); enum blk_default_limits { BLK_MAX_SEGMENTS = 128, BLK_SAFE_MAX_SECTORS = 255, - BLK_DEF_MAX_SECTORS = 1024, BLK_MAX_SEGMENT_SIZE = 65536, BLK_SEG_BOUNDARY_MASK = 0xFFFFFFFFUL, }; |