Date: Mon, 2 Nov 2015 14:13:30 -0800 From: Adrian Chadd <adrian.chadd@gmail.com> To: Tijl Coosemans <tijl@freebsd.org> Cc: Jeff Roberson <jeff@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, Konstantin Belousov <kib@freebsd.org> Subject: Re: svn commit: r289279 - in head/sys: kern vm Message-ID: <CAJ-Vmok5ndjfV0OrKf9R1-Dbec6Fah-GFph0u-HbvsxAAwZHBw@mail.gmail.com> In-Reply-To: <20151029212554.799f76eb@kalimero.tijl.coosemans.org> References: <201510140210.t9E2A79H056595@repo.freebsd.org> <20151029212554.799f76eb@kalimero.tijl.coosemans.org>
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Hi Tijl, and others;
Here's something that Jeff came up with that fixes my problem:
adrian@victoria:~/work/freebsd/head-embedded/src % svn diff sys/kern/
Index: sys/kern/vfs_bio.c
===================================================================
--- sys/kern/vfs_bio.c (revision 290048)
+++ sys/kern/vfs_bio.c (working copy)
@@ -2910,7 +2910,7 @@
} while(buf_scan(false) == 0);
if (reserved)
- bufspace_release(maxsize);
+ atomic_subtract_long(&bufspace, maxsize);
if (bp != NULL) {
bp->b_flags |= B_INVAL;
brelse(bp);
Would you/others please try this and see if it improves things? It
improves things for me on these memory-starved MIPS boards.
-a
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