K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2011-11-16T18:33:17.676263Z
K 7
svn:log
V 446
MFC 220791,220793,220846,221836,226364:
Add the posix_fallocate(2) syscall.  The default implementation in
vop_stdallocate() is filesystem agnostic and will run as slow as a
read/write loop in userspace; however, it serves to correctly
implement the functionality for filesystems that do not implement a
VOP_ALLOCATE.

Allow VOP_ALLOCATE to be iterative, and have kern_posix_fallocate(9)
drive looping and potentially yielding.

Reviewed by:	mdf

END