phk f6da000c05 [Regarding the previous patch] This is completely wrong.
1. ffs_alloc() actually allowed writing one block less one frag (normally
   7 frags or 7/8 blocks) beyond the limit.
2. freebufspace() gives the free space in frags, but `size' is in bytes,
   so the change results in approximately `size' fragments too many being
   reserved.
3. ffs_realloccg() has the same bug but wasn't changed.

PR:		3398
Submitted by:	bde
Eyeballed by:	phk
1997-09-19 11:13:16 +00:00
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