Date: Wed, 7 Oct 2015 09:39:46 +0000 (UTC) From: Tai-hwa Liang <avatar@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r288987 - in stable/8/sys: . amd64/amd64 dev/sound gnu/fs/reiserfs i386/i386 Message-ID: <201510070939.t979dk1I061256@repo.freebsd.org>
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Author: avatar Date: Wed Oct 7 09:39:45 2015 New Revision: 288987 URL: https://svnweb.freebsd.org/changeset/base/288987 Log: MFC r238980: Just like the other file systems found in /sys/fs, g_vfs_open() should be paried with g_vfs_close(). Though g_vfs_close() is a wrapper around g_wither_geom_close(), r206130 added the following test in g_vfs_open(): if (bo->bo_private != vp) return (EBUSY); Which will cause a 'Device busy' error inside reiserfs_mountfs() if the same file system is re-mounted again after umount or mounting failure: (case 1, /dev/ad4s3 is not a valid REISERFS partition) # mount -t reiserfs -o ro /dev/ad4s3 /mnt mount: /dev/ad4s3: Invalid argument # mount -t msdosfs -o ro /dev/ad4s3 /mnt mount: /dev/ad4s3: Device busy (case 2, /dev/ad4s3 is a valid REISERFS partition) # mount -t reiserfs -o ro /dev/ad4s3 /mnt # umount /mnt # mount -t reiserfs -o ro /dev/ad4s3 /mnt mount: /dev/ad4s3: Device busy On the other hand, g_vfs_close() 'fixed' the above cases by doing an extra step to keep 'sc->sc_bo->bo_private' and 'cp->private' pointers synchronised. Reviewed by: kib Modified: stable/8/sys/gnu/fs/reiserfs/reiserfs_vfsops.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/Makefile (props changed) stable/8/sys/amd64/ (props changed) stable/8/sys/amd64/amd64/intr_machdep.c (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/arm/ (props changed) stable/8/sys/boot/ (props changed) stable/8/sys/bsm/ (props changed) stable/8/sys/cam/ (props changed) stable/8/sys/cddl/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/compat/ (props changed) stable/8/sys/conf/ (props changed) stable/8/sys/contrib/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/crypto/ (props changed) stable/8/sys/ddb/ (props changed) stable/8/sys/dev/ (props changed) stable/8/sys/dev/aac/ (props changed) stable/8/sys/dev/acpi_support/ (props changed) stable/8/sys/dev/acpica/ (props changed) stable/8/sys/dev/adb/ (props changed) 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stable/8/sys/vm/ (props changed) stable/8/sys/x86/ (props changed) stable/8/sys/xdr/ (props changed) stable/8/sys/xen/ (props changed) Modified: stable/8/sys/gnu/fs/reiserfs/reiserfs_vfsops.c ============================================================================== --- stable/8/sys/gnu/fs/reiserfs/reiserfs_vfsops.c Wed Oct 7 09:30:08 2015 (r288986) +++ stable/8/sys/gnu/fs/reiserfs/reiserfs_vfsops.c Wed Oct 7 09:39:45 2015 (r288987) @@ -227,7 +227,7 @@ reiserfs_unmount(struct mount *mp, int m DROP_GIANT(); g_topology_lock(); - g_wither_geom_close(rmp->rm_cp->geom, ENXIO); + g_vfs_close(rmp->rm_cp); g_topology_unlock(); PICKUP_GIANT(); vrele(rmp->rm_devvp); @@ -638,7 +638,7 @@ out: if (cp != NULL) { DROP_GIANT(); g_topology_lock(); - g_wither_geom_close(cp->geom, ENXIO); + g_vfs_close(cp); g_topology_unlock(); PICKUP_GIANT(); }
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