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nsfs: use d_make_root()

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Normally d_make_root() is used to create the root dentry of superblock;
here we use it for a different purpose, but... idiomatic or not, we
need the same operation.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2023-11-18 16:50:29 -05:00
parent 9024b4c965
commit fb7945b484
1 changed files with 2 additions and 5 deletions
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7
fs/nsfs.c
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@ -90,12 +90,9 @@ slow:
inode->i_fop = &ns_file_operations; inode->i_fop = &ns_file_operations;
inode->i_private = ns; inode->i_private = ns;
dentry = d_alloc_anon(mnt->mnt_sb); dentry = d_make_root(inode); /* not the normal use, but... */
if (!dentry) { if (!dentry)
iput(inode);
return -ENOMEM; return -ENOMEM;
}
d_instantiate(dentry, inode);
dentry->d_fsdata = (void *)ns->ops; dentry->d_fsdata = (void *)ns->ops;
d = atomic_long_cmpxchg(&ns->stashed, 0, (unsigned long)dentry); d = atomic_long_cmpxchg(&ns->stashed, 0, (unsigned long)dentry);
if (d) { if (d) {