linux-kernel - linux-next: merge conflict between vfs for-next and overlayfs-next

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Date:   Fri, 26 Jan 2018 16:43:25 +0200
From:   Amir Goldstein <amir73il@...il.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Al Viro <viro@...iv.linux.org.uk>,
        Miklos Szeredi <miklos@...redi.hu>
Cc:     linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: linux-next: merge conflict between vfs for-next and overlayfs-next

Hi Stephen, Al, Miklos,

I noticed that the vfs tree for-next branch is not yet in linux-next and
has a merge conflict with overlayfs-next branch, already in linux-next.

This is a trivial conflict due to the fact that commit f9c34674bc60 ("vfs:
factor out helpers d_instantiate_anon() and d_alloc_anon()") refactors
__d_obtain_alias() and changes the variable name from 'tmp' to 'dentry'.

Below is the patch to resolve the conflict when merging vfs for-next
onto overlayfs-next.
Probably best if Al picks up the re-factoring patch to his tree anyway.

Thanks,
Amir.

---

--- fs/dcache.c
+++ fs/dcache.c
@@ -1957,9 +1963,11 @@ static struct dentry
*__d_instantiate_anon(struct dentry *dentry,
  spin_lock(&dentry->d_lock);
  __d_set_inode_and_type(dentry, inode, add_flags);
  hlist_add_head(&dentry->d_u.d_alias, &inode->i_dentry);
- hlist_bl_lock(&dentry->d_sb->s_anon);
- hlist_bl_add_head(&dentry->d_hash, &dentry->d_sb->s_anon);
- hlist_bl_unlock(&dentry->d_sb->s_anon);
+ if (!disconnected) {
+ hlist_bl_lock(&dentry->d_sb->s_roots);
+ hlist_bl_add_head(&dentry->d_hash, &dentry->d_sb->s_roots);
+ hlist_bl_unlock(&dentry->d_sb->s_roots);
+ }
  spin_unlock(&dentry->d_lock);
  spin_unlock(&inode->i_lock);