freebsd-nq/sys/fs/nullfs
Konstantin Belousov f36aa2b792 Pass MNTK_NO_IOPF and MNTK_UNMAPPED_BUFS flags from the lower
filesystem to the nullfs mount.

MNTK_NO_IOPF must be present on the nullfs struct mount so that struct
file fo_read and fo_write fops operate in the mode requested by the
lower mount.

MNTK_UNMAPPED_BUFS allows VOP_GETPAGES() to use unmapped buffers.  It
does not matter for VOP_GETPAGES() calls from vm_fault() since handle
of the vm_object always points to the lower vnode.  But it may be
useful for other situations where VOP_GETPAGES() is used.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2016-03-04 17:24:28 +00:00
..
null_subr.c Convert nullfs hash lock from a mutex to an rwlock. 2014-12-30 21:41:35 +00:00
null_vfsops.c Pass MNTK_NO_IOPF and MNTK_UNMAPPED_BUFS flags from the lower 2016-03-04 17:24:28 +00:00
null_vnops.c After nullfs rmdir operation, reclaim the directory vnode which was 2016-02-17 19:43:03 +00:00
null.h