update from margo

lfs_init moves to lfs_vfsops.c

daddr_t => ufs_daddr_t

convert from timespec to explicit types

new queue structure

changes for 4.4BSD-Lite requested by USL

changes for 4.4BSD-Lite requested by USL

Cleanups for 4.4BSD-Lite

4.4BSD snapshot (revision 8.1); add 1993 to copyright

vinvalbuf takes parameter to indicate interrupt

use di_inumber not di_inum.

Pass flags to vinvalbuf. Use new queue structures.

Increment blocks available after truncate rather than decrement.

lfs_truncate may be removing blocks that have been made dirty in
the cache. Since there are no disk addresses for these blocks yet, they
weren't being counted, and lfs_bavail was never being updat

lfs_truncate may be removing blocks that have been made dirty in
the cache. Since there are no disk addresses for these blocks yet, they
weren't being counted, and lfs_bavail was never being updated. Now we count
them.

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SEGDEC should look for 0 instead of UNASSIGNED disk addresses since
it is reading the value off dinode or indirect page.

Formatting. Change UBWRITE to VOP_BWRITE, add inode accounting.
Fix inode block accounting and free space accounting.

delete VERBOSE #ifdef's

check for negative bytes in seguse update; increment version number
after blocks are free (for the cleaner)

Do block accounting in terms of disk sectors, not file system blocks.

truncate doesn't need to be synchronous
add LFS_SYNC, so that "synchronous" operations don't cause deadlock

indirect block count should be fixed by revision 7.23 in lfs_segment.c

put in short symlink support; fix block counts
make truncate not wait -- FFS truncate must wait because the in-core bit
maps could be updated before the inode gets to disk which would be bad;
LFS do

put in short symlink support; fix block counts
make truncate not wait -- FFS truncate must wait because the in-core bit
maps could be updated before the inode gets to disk which would be bad;
LFS doesn't have this issue, and can't wait because the segment writer may
deadlock with an VOP_REMOVE operation

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Chris sez time is volatile

vget becomes a VFS op (Kirk); describe ap (Kirk); use ap instead of
passing arguments for stackable file systems (Heideman);

directory ops, unmount, minor cleanup; from Margo Seltzer