Mark Johnston 34e2051faf Remove swblk_t.
It was used only to store the bounds of each swap device.  However,
since swblk_t is a signed 32-bit int and daddr_t is a signed 64-bit
int, swp_pager_isondev() may return an invalid result if swap devices
are repeatedly added and removed and sw_end for a device ends up
becoming a negative number.

Note that the removed comment about maximum swap size still applies.

Reviewed by:	jeff, kib
Tested by:	pho
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23666
2020-02-17 15:11:07 +00:00
..
2019-07-16 16:02:20 +00:00
2020-02-17 15:11:07 +00:00
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