From 4f522a247bc26d4ab5c8fc406ffffa8b3a77abe3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 11 Feb 2013 23:20:37 -0500 Subject: d_hash_and_lookup(): export, switch open-coded instances * calling conventions change - ERR_PTR() is returned on ->d_hash() errors; NULL is just for dcache miss now. * exported, open-coded instances in ncpfs and cifs converted. Signed-off-by: Al Viro --- fs/dcache.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) (limited to 'fs/dcache.c') diff --git a/fs/dcache.c b/fs/dcache.c index ada6123414ae..ebab049826c0 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -1672,7 +1672,6 @@ EXPORT_SYMBOL(d_splice_alias); struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode, struct qstr *name) { - int error; struct dentry *found; struct dentry *new; @@ -1681,10 +1680,12 @@ struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode, * if not go ahead and create it now. */ found = d_hash_and_lookup(dentry->d_parent, name); + if (unlikely(IS_ERR(found))) + goto err_out; if (!found) { new = d_alloc(dentry->d_parent, name); if (!new) { - error = -ENOMEM; + found = ERR_PTR(-ENOMEM); goto err_out; } @@ -1725,7 +1726,7 @@ struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode, err_out: iput(inode); - return ERR_PTR(error); + return found; } EXPORT_SYMBOL(d_add_ci); @@ -1997,12 +1998,10 @@ next: * @dir: Directory to search in * @name: qstr of name we wish to find * - * On hash failure or on lookup failure NULL is returned. + * On lookup failure NULL is returned; on bad name - ERR_PTR(-error) */ struct dentry *d_hash_and_lookup(struct dentry *dir, struct qstr *name) { - struct dentry *dentry = NULL; - /* * Check for a fs-specific hash function. Note that we must * calculate the standard hash first, as the d_op->d_hash() @@ -2010,13 +2009,13 @@ struct dentry *d_hash_and_lookup(struct dentry *dir, struct qstr *name) */ name->hash = full_name_hash(name->name, name->len); if (dir->d_flags & DCACHE_OP_HASH) { - if (dir->d_op->d_hash(dir, dir->d_inode, name) < 0) - goto out; + int err = dir->d_op->d_hash(dir, dir->d_inode, name); + if (unlikely(err < 0)) + return ERR_PTR(err); } - dentry = d_lookup(dir, name); -out: - return dentry; + return d_lookup(dir, name); } +EXPORT_SYMBOL(d_hash_and_lookup); /** * d_validate - verify dentry provided from insecure source (deprecated) @@ -2995,7 +2994,7 @@ ino_t find_inode_number(struct dentry *dir, struct qstr *name) ino_t ino = 0; dentry = d_hash_and_lookup(dir, name); - if (dentry) { + if (!IS_ERR_OR_NULL(dentry)) { if (dentry->d_inode) ino = dentry->d_inode->i_ino; dput(dentry); -- cgit v1.2.2