diff options
| author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2014-06-04 16:07:46 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 16:54:02 -0700 |
| commit | 47a191fd38ebddb1bd1510ec2bc1085c578c8868 (patch) | |
| tree | 5c65289e7195f4ecd445b2b55e8d44cfa7e7ea00 /fs/btrfs/locking.c | |
| parent | 57d998456ae8680ed446aa1993f45f4d8a9a5973 (diff) | |
fs/block_dev.c: add bdev_read_page() and bdev_write_page()
A block device driver may choose to provide a rw_page operation. These
will be called when the filesystem is attempting to do page sized I/O to
page cache pages (ie not for direct I/O). This does preclude I/Os that
are larger than page size, so this may only be a performance gain for
some devices.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Tested-by: Dheeraj Reddy <dheeraj.reddy@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/btrfs/locking.c')
0 files changed, 0 insertions, 0 deletions