K 10
svn:author
V 4
jeff
K 8
svn:date
V 27
2015-07-29T02:26:57.599949Z
K 7
svn:log
V 584
 - Make 'struct buf *buf' private to vfs_bio.c.  Having a global variable
   'buf' is inconvenient and has lead me to some irritating to discover
   bugs over the years.  It also makes it more challenging to refactor
   the buf allocation system.
 - Move swbuf and declare it as an extern in vfs_bio.c.  This is still
   not perfect but better than it was before.
 - Eliminate the unused ffs function that relied on knowledge of the buf
   array.
 - Move the shutdown code that iterates over the buf array into vfs_bio.c.

Reviewed by:	kib
Sponsored by:	EMC / Isilon Storage Division

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