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Code Issues Releases Activity

Hide transient EBADF errors caused by the parallel revoke(2) or forced

Browse Source 
unmount of devfs mounts, by restarting the failed syscall.

When restarted, failing syscalls eventually either stop finding the
node and returning ENOENT, or the vnode op vectors finally transition
to the deadfs vop.  The later return EIO or other error, more
appropriate for the operation.

Submitted by:	bde
Tested by:	pho
MFC after:	3 weeks
This commit is contained in:
Konstantin Belousov 2016-01-02 20:29:28 +00:00
parent 2f204e1fe4
commit fb57d63e47
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=293059
1 changed files with 3 additions and 3 deletions
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6
sys/fs/devfs/devfs_vnops.c
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@ -244,18 +244,18 @@ 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);