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autofs4: Add d_automount() dentry operation

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Add a function to use the newly defined ->d_automount() dentry operation
for triggering mounts instead of doing the user space callback in ->lookup()
and ->d_revalidate().

Note, to be useful the subsequent patch to add the ->d_manage() dentry
operation is also needed so the discussion of functionality is deferred to
that patch.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Ian Kent
2011-01-14 18:45:58 +00:00
committed by Al Viro
parent db3729153e
commit 10584211e4
4 changed files with 189 additions and 112 deletions
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4
fs/autofs4/inode.c
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@@ -252,6 +252,7 @@ static struct autofs_info *autofs4_mkroot(struct autofs_sb_info *sbi)
}
static const struct dentry_operations autofs4_sb_dentry_operations = {
.d_automount = autofs4_d_automount,
.d_release = autofs4_dentry_release,
};
@@ -320,6 +321,9 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
goto fail_dput;
}
if (autofs_type_trigger(sbi->type))
__managed_dentry_set_automount(root);
root_inode->i_fop = &autofs4_root_operations;
root_inode->i_op = autofs_type_trigger(sbi->type) ?
&autofs4_direct_root_inode_operations :