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Code Issues Releases Activity

The temporary workaround for the call to the vget() without lock type in

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the fdesc_allocvp(). The caller of the fdesc_allocvp() expects that the
returned vnode is not reclaimed. Do lock the vnode exclusive and drop
the lock after.

Reported by:	pho
Reviewed by:	jeff
This commit is contained in:
Konstantin Belousov 2008-04-04 09:37:57 +00:00
parent 85018ba57b
commit 8eb6b6ecb6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=177910
1 changed files with 3 additions and 1 deletions
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4
sys/fs/fdescfs/fdesc_vnops.c
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@ -116,9 +116,11 @@ fdesc_allocvp(ftype, ix, mp, vpp, td)
loop:
LIST_FOREACH(fd, fc, fd_hash) {
if (fd->fd_ix == ix && fd->fd_vnode->v_mount == mp) {
if (vget(fd->fd_vnode, 0, td))
if (vget(fd->fd_vnode, LK_EXCLUSIVE | LK_CANRECURSE,
td))
goto loop;
*vpp = fd->fd_vnode;
VOP_UNLOCK(*vpp, 0);
return (error);
}
}