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exportfs: eliminate unused "noprogress" counter 

Note this counter is now being set to 0 on every pass through the loop,
so it no longer serves any useful purpose.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
J. Bruce Fields 2013-10-16 21:20:19 -04:00 committed by Al Viro
parent a056cc8934
commit e4b70ebeeb
1 changed files with 2 additions and 13 deletions
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15
fs/exportfs/expfs.c
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@ -145,18 +145,9 @@ static void clear_disconnected(struct dentry *dentry)
static int
reconnect_path(struct vfsmount *mnt, struct dentry *target_dir, char *nbuf)
{
int noprogress = 0;
int err = -ESTALE;
/*
* It is possible that a confused file system might not let us complete
* the path to the root. For example, if get_parent returns a directory
* in which we cannot find a name for the child. While this implies a
* very sick filesystem we don't want it to cause knfsd to spin. Hence
* the noprogress counter. If we go through the loop 10 times (2 is
* probably enough) without getting anywhere, we just give up
*/
while (target_dir->d_flags & DCACHE_DISCONNECTED && noprogress++ < 10) {
while (target_dir->d_flags & DCACHE_DISCONNECTED) {
struct dentry *pd = find_disconnected_root(target_dir);
BUG_ON(pd == mnt->mnt_sb->s_root);
@ -230,9 +221,7 @@ reconnect_path(struct vfsmount *mnt, struct dentry *target_dir, char *nbuf)
*/
dput(npd);
dput(ppd);
if (npd == pd)
noprogress = 0;
else
if (npd != pd)
goto out_reconnected;
if (IS_ROOT(pd)) {
/* something went wrong, we have to give up */