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vfs: whack mips remnant

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This reverts commit 8ffa01a061.
This commit is contained in:
Mateusz Guzik 2022-11-09 00:31:50 +00:00
parent 185efcc376
commit 83286682f8
1 changed files with 1 additions and 18 deletions
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19
sys/kern/vfs_bio.c
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@ -5212,24 +5212,7 @@ bdata2bio(struct buf *bp, struct bio *bip)
}
}
/*
* The MIPS pmap code currently doesn't handle aliased pages.
* The VIPT caches may not handle page aliasing themselves, leading
* to data corruption.
*
* As such, this code makes a system extremely unhappy if said
* system doesn't support unaliasing the above situation in hardware.
* Some "recent" systems (eg some mips24k/mips74k cores) don't enable
* this feature at build time, so it has to be handled in software.
*
* Once the MIPS pmap/cache code grows to support this function on
* earlier chips, it should be flipped back off.
*/
#ifdef __mips__
static int buf_pager_relbuf = 1;
#else
static int buf_pager_relbuf = 0;
#endif
static int buf_pager_relbuf;
SYSCTL_INT(_vfs, OID_AUTO, buf_pager_relbuf, CTLFLAG_RWTUN,
&buf_pager_relbuf, 0,
"Make buffer pager release buffers after reading");