Konstantin Belousov eac91e326a Reduce the amount of calls to VOP_BMAP() made from the local vnode
pager.  It is enough to execute VOP_BMAP() once to obtain both the
disk block address for the requested page, and the before/after limits
for the contiguous run.  The clipping of the vm_page_t array passed to
the vnode_pager_generic_getpages() and the disk address for the first
page in the clipped array can be deduced from the call results.

While there, remove some noise (like if (1) {...}) and adjust nearby
code.

Reviewed by:	alc
Discussed with:	glebius
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	3 weeks
2015-10-24 21:59:22 +00:00
..
2015-10-14 16:21:41 +00:00
2015-10-24 03:16:40 +00:00
2015-10-21 10:44:07 +00:00