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Make sure the cdev doesn't go away while the filesystem is still mounted.

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Otherwise dev2udev() could return garbage.

Reviewed by:	kib
Approved by:	rwatson (mentor)
Sponsored by:	FreeBSD Foundation
This commit is contained in:
trasz 2009-01-29 16:47:15 +00:00
parent 37ae761d1d
commit d27cdd2fdd
1 changed files with 3 additions and 0 deletions
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3
sys/ufs/ffs/ffs_vfsops.c
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@ -641,6 +641,7 @@ ffs_mountfs(devvp, mp, td)
VOP_UNLOCK(devvp, 0);
if (error)
return (error);
dev_ref(dev);
if (devvp->v_rdev->si_iosize_max != 0)
mp->mnt_iosize_max = devvp->v_rdev->si_iosize_max;
if (mp->mnt_iosize_max > MAXPHYS)
@ -921,6 +922,7 @@ out:
free(ump, M_UFSMNT);
mp->mnt_data = NULL;
}
dev_rel(dev);
return (error);
}
@ -1107,6 +1109,7 @@ ffs_unmount(mp, mntflags, td)
g_topology_unlock();
PICKUP_GIANT();
vrele(ump->um_devvp);
dev_rel(ump->um_dev);
mtx_destroy(UFS_MTX(ump));
if (mp->mnt_gjprovider != NULL) {
free(mp->mnt_gjprovider, M_UFSMNT);