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authorMatthew Wilcox <matthew.r.wilcox@intel.com>2014-06-04 16:07:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 16:54:02 -0700
commit47a191fd38ebddb1bd1510ec2bc1085c578c8868 (patch)
tree5c65289e7195f4ecd445b2b55e8d44cfa7e7ea00 /fs/bfs
parent57d998456ae8680ed446aa1993f45f4d8a9a5973 (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/bfs')
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