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ovl: clarify ovl_get_root() semantics

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Change the semantics to take a reference on upperdentry instead
of transferrig the reference.

This is needed for upcoming port to new mount api.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
This commit is contained in:
Amir Goldstein 2023-06-17 11:00:24 +03:00
parent e4599d4b1a
commit 367d002d6c
1 changed files with 3 additions and 1 deletions
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4
fs/overlayfs/super.c
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@ -1922,6 +1922,8 @@ static struct dentry *ovl_get_root(struct super_block *sb,
ovl_set_upperdata(d_inode(root));
ovl_inode_init(d_inode(root), &oip, ino, fsid);
ovl_dentry_init_flags(root, upperdentry, oe, DCACHE_OP_WEAK_REVALIDATE);
/* root keeps a reference of upperdentry */
dget(upperdentry);
return root;
}
@ -2100,7 +2102,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
if (!root_dentry)
goto out_free_oe;
mntput(upperpath.mnt);
path_put(&upperpath);
kfree(splitlower);
sb->s_root = root_dentry;