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MFC r293059:

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Hide transient EBADF errors caused by the parallel revoke(2) or forced
unmount of devfs mounts, by restarting the failed syscall.
This commit is contained in:
kib 2016-01-23 07:33:02 +00:00
parent 51a396136e
commit 00ce898270
1 changed files with 3 additions and 3 deletions
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6
sys/fs/devfs/devfs_vnops.c
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@ -239,18 +239,18 @@ devfs_populate_vp(struct vnode *vp)
if (DEVFS_DMP_DROP(dmp)) {
sx_xunlock(&dmp->dm_lock);
devfs_unmount_final(dmp);
return (EBADF);
return (ERESTART);
}
if ((vp->v_iflag & VI_DOOMED) != 0) {
sx_xunlock(&dmp->dm_lock);
return (EBADF);
return (ERESTART);
}
de = vp->v_data;
KASSERT(de != NULL,
("devfs_populate_vp: vp->v_data == NULL but vnode not doomed"));
if ((de->de_flags & DE_DOOMED) != 0) {
sx_xunlock(&dmp->dm_lock);
return (EBADF);
return (ERESTART);
}
return (0);