From owner-freebsd-fs@freebsd.org Sun Oct 22 23:53:46 2017 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2FFC3E3A4CD for ; Sun, 22 Oct 2017 23:53:46 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1E3097EA13 for ; Sun, 22 Oct 2017 23:53:46 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id v9MNrjZ9044840 for ; Sun, 22 Oct 2017 23:53:45 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 223015] [tmpfs] tmpfs does not support sparse files Date: Sun, 22 Oct 2017 23:53:45 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: kwhite@site.uottawa.ca X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-fs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: attachments.isobsolete attachments.created Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Oct 2017 23:53:46 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223015 Keith White changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #187197|0 |1 is obsolete| | --- Comment #6 from Keith White --- Created attachment 187384 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D187384&action= =3Dedit POC for using resident_page_count This patch allows me to use large files with holes. e.g. # mkdir /tmp/_x # mount -t tmpfs -osize=3D10m tmp /tmp/_x # truncate -s4g /tmp/_x/4g # ls -ls /tmp/_x/4g 0 -rw-r--r-- 1 root wheel 4294967296 Oct 22 19:51 /tmp/_x/4g # df /tmp/_x Filesystem 1K-blocks Used Avail Capacity Mounted on tmpfs 10240 4 10236 0% /tmp/_x # du /tmp/_x 0 /tmp/_x # umount /tmp/_x # rmdir /tmp/_x --=20 You are receiving this mail because: You are the assignee for the bug.=