freebsd-nq/sys/ufs
Jason A. Harmening 4775b07ebd FFS: allow sendfile(2) to work with block sizes greater than the page size
Implement ffs_getpages_async(), which when possible calls the asynchronous
flavor of the generic pager's getpages function. When the underlying
block size is larger than the system page size, however, it will invoke
the (synchronous) buffer cache pager, followed by a call to the client
completion routine. This retains true asynchronous completion in the most
common (block size <= page size) case, which is important for the performance
of the new sendfile(2). The behavior in the larger block size case mirrors
the default implementation of VOP_GETPAGES_ASYNC, which most other
filesystems use anyway as they do not override the getpages_async method.

PR:		235708
Reported by:	pho
Reviewed by:	kib, glebius
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D19340
2019-02-26 04:56:10 +00:00
..
ffs FFS: allow sendfile(2) to work with block sizes greater than the page size 2019-02-26 04:56:10 +00:00
ufs Move ASSERT_VOP_LOCKED to top of ufs_vinit() as it should be true 2018-12-30 06:03:20 +00:00