Date: Thu, 27 Jan 2011 16:10:25 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/md md.c Message-ID: <201101271610.p0RGAhfa012918@repoman.freebsd.org>
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kib 2011-01-27 16:10:25 UTC
FreeBSD src repository
Modified files:
sys/dev/md md.c
Log:
SVN rev 217946 on 2011-01-27 16:10:25Z by kib
Add support for BIO_DELETE on swap-backed md(4). In the case of BIO_DELETE
covering the whole page, free the page. Otherwise, clear the region and
mark it clean. Not marking the page dirty could reinstantiate cleared
data, but it is allowed by BIO_DELETE specification and saves unneeded
write to swap.
Reviewed by: alc
Tested by: pho
MFC after: 2 weeks
Revision Changes Path
1.196 +10 -6 src/sys/dev/md/md.c
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