Date: Thu, 25 Nov 2021 21:17:39 +1100 From: Peter Jeremy <peter@rulingia.com> To: Konstantin Belousov <kostikbel@gmail.com> Cc: src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: 8ef0c11e7ce7 - main - nfsclient: upgrade vnode lock in VOP_OPEN()/VOP_CLOSE() if we need to flush buffers Message-ID: <YZ9iw/JZYhD/oRwG@server.rulingia.com> In-Reply-To: <YZ4iUdDOlun%2Bh3/z@kib.kiev.ua> References: <202111161714.1AGHEtBA084291@gitrepo.freebsd.org> <YZyhpJ9TrbTpjths@server.rulingia.com> <YZyyGdErowNF1pWv@kib.kiev.ua> <YZ2hJkPwiAKvhWQ7@server.rulingia.com> <YZ2tk3CZubvsXKSr@kib.kiev.ua> <YZ3xdAxfEAiV/R6M@server.rulingia.com> <YZ4iUdDOlun%2Bh3/z@kib.kiev.ua>
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--N3wcggWsInNfpQts Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2021-Nov-24 13:30:25 +0200, Konstantin Belousov <kostikbel@gmail.com> wr= ote: >Please try this, but it may require more work. In particular, watch out >for deadlock: the swapped out pages are busied before swap vnode is locked. >By itself it is fine, but if some other io happens to the swap vnode, it >might become problematic. I've built a few non-trivial ports and run a quick hack where several processes are making the system thrash for about 4 hours without problems. --=20 Peter Jeremy --N3wcggWsInNfpQts Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEE7rKYbDBnHnTmXCJ+FqWXoOSiCzQFAmGfYr1fFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEVF QjI5ODZDMzA2NzFFNzRFNjVDMjI3RTE2QTU5N0EwRTRBMjBCMzQACgkQFqWXoOSi CzQcEg//QxHQ8YXNjsViLZyElmiWh+Mz0JTGAyvcA9oqDeonPg9dQjgqAuFYyIGG TK2iPRvcjlXxc0M2hM7LnxYhuf90HJ0wNqOMI3ZH1z9HryIvfinCcndBOKNEM8cg 5P03C00u6n0u+mWO1g50DrhXL/GIALH/nuj/uujz1Y/LJ4QtsVkcOzStgT9vNlWc 0yFS54gPXW+q1SNYtoIu+ZK7pbPl6wJH6gqfCSZl9W7YdrL+TMzVexho2dp+u1BH CFKF/SG3XIYnGL6imZxNPXqp3vMKaIxLUvolEEEULQ0WdAUzhFFHIqCoxZPt83E7 vCGv9Be9wlNqqDq11E1dmeuW33UT54/zhcyn5vDQHgEtA8RrvSlrCInj3+3kfJ2a IsqJhrdbk7SY+tfEQt2Akb+V07lv8+Tr5gnN8R0nciYr5pT4vc/NQwn7dKyMr/OA ZBZGzaF0fA+1IwqaH1GJ+lOTH299xPkXNwO1GM87fja+oziTSVMJ+UcI7kWH2wPu JNBpKzSqAoOkja/WB47COdvnsAdoiAhWQy+59T6Ie+CS/ad9k10O3FsYYjPEdWgM qCf9Sa6enHT9aw3IiOnDpYfrD3eJ+Y8yiOwnr2WKWNhwWK/03hoK66KVp0ieB75U onDmb01QdlQQh9CmCbtDvxpvL0Dp2Bt0YLLZh7lhHzD/b7kWAfo= =1UIU -----END PGP SIGNATURE----- --N3wcggWsInNfpQts--
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