From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [RFC 5/5] pm: remove kernel thread freezing Date: Tue, 3 Oct 2017 22:21:21 +0200 Message-ID: <20171003202121.GB23521@amd> References: <20171003185313.1017-1-mcgrof@kernel.org> <20171003185313.1017-6-mcgrof@kernel.org> <20171003201204.GA23521@amd> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="VrqPEDrXMn8OVzN4" Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-block-owner@vger.kernel.org To: Jiri Kosina Cc: "Luis R. Rodriguez" , viro@zeniv.linux.org.uk, bart.vanassche@wdc.com, ming.lei@redhat.com, tytso@mit.edu, darrick.wong@oracle.com, rjw@rjwysocki.net, len.brown@intel.com, linux-fsdevel@vger.kernel.org, boris.ostrovsky@oracle.com, jgross@suse.com, todd.e.brandt@linux.intel.com, nborisov@suse.com, jack@suse.cz, martin.petersen@oracle.com, ONeukum@suse.com, oleksandr@natalenko.name, oleg.b.antonyan@gmail.com, linux-pm@vger.kernel.org, linux-block@vger.kernel.org, linux-xfs@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-pm@vger.kernel.org --VrqPEDrXMn8OVzN4 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > > Can memory management doing background writes be a problem? >=20 > This point I don't understand. What exactly do you mean? Hibernation: We freeze, do system snapshot, unfreeze, and write image to disk. Memory management wakes up (this used to be called bdflush), decides its time to write some dirty data back to disk. Powerdown. But state on the disk now does not correspond to what the image expects. Problem? Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --VrqPEDrXMn8OVzN4 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlnT8UEACgkQMOfwapXb+vLLvQCgrbah0w4pswij9x8mDaOZ8tWj JkEAnjAiMGrtMKQEmesRF5Lv5Xdr1ocD =OMiR -----END PGP SIGNATURE----- --VrqPEDrXMn8OVzN4--