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Commit eb1b3fa5 authored by Jeff Layton's avatar Jeff Layton Committed by Steve French
Browse files

cifs: rename cifs_readdir_lookup to cifs_prime_dcache and make it void return 



The caller doesn't do anything with the dentry, so there's no point in
holding a reference to it on return. Also cifs_prime_dcache better
describes the actual purpose of the function.

Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent 471b1f98

fs/cifs/readdir.c

+18 −24
Original line number Diff line number Diff line
@@ -66,18 +66,20 @@ static inline void dump_cifs_file_struct(struct file *file, char *label) 
#endif /* DEBUG2 */



/*

 * Attempt to preload the dcache with the results from the FIND_FIRST/NEXT

 *

 * Find the dentry that matches "name". If there isn't one, create one. If it's

 * a negative dentry or the uniqueid changed, then drop it and recreate it.

 */

static struct dentry *

cifs_readdir_lookup(struct dentry *parent, struct qstr *name,

static void

cifs_prime_dcache(struct dentry *parent, struct qstr *name,

		    struct cifs_fattr *fattr)

{

	struct dentry *dentry, *alias;

	struct inode *inode;

	struct super_block *sb = parent->d_inode->i_sb;



	cFYI(1, "For %s", name->name);

	cFYI(1, "%s: for %s", __func__, name->name);



	if (parent->d_op && parent->d_op->d_hash)

		parent->d_op->d_hash(parent, parent->d_inode, name);
@@ -87,37 +89,32 @@ cifs_readdir_lookup(struct dentry *parent, struct qstr *name, 
	dentry = d_lookup(parent, name);

	if (dentry) {

		int err;



		inode = dentry->d_inode;

		/* update inode in place if i_ino didn't change */

		if (inode && CIFS_I(inode)->uniqueid == fattr->cf_uniqueid) {

			cifs_fattr_to_inode(inode, fattr);

			return dentry;

			goto out;

		}

		err = d_invalidate(dentry);

		dput(dentry);

		if (err)

			return NULL;

			return;

	}



	dentry = d_alloc(parent, name);

	if (dentry == NULL)

		return NULL;

	if (!dentry)

		return;



	inode = cifs_iget(sb, fattr);

	if (!inode) {

		dput(dentry);

		return NULL;

	}

	if (!inode)

		goto out;



	alias = d_materialise_unique(dentry, inode);

	if (alias != NULL) {

	if (alias && !IS_ERR(alias))

		dput(alias);

out:

	dput(dentry);

		if (IS_ERR(alias))

			return NULL;

		dentry = alias;

	}



	return dentry;

}



static void
@@ -662,7 +659,6 @@ static int cifs_filldir(char *find_entry, struct file *file, filldir_t filldir, 
	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);

	struct cifs_dirent de = { NULL, };

	struct cifs_fattr fattr;

	struct dentry *dentry;

	struct qstr name;

	int rc = 0;

	ino_t ino;
@@ -733,13 +729,11 @@ static int cifs_filldir(char *find_entry, struct file *file, filldir_t filldir, 
		 */

		fattr.cf_flags |= CIFS_FATTR_NEED_REVAL;



	ino = cifs_uniqueid_to_ino_t(fattr.cf_uniqueid);

	dentry = cifs_readdir_lookup(file->f_dentry, &name, &fattr);

	cifs_prime_dcache(file->f_dentry, &name, &fattr);



	ino = cifs_uniqueid_to_ino_t(fattr.cf_uniqueid);

	rc = filldir(dirent, name.name, name.len, file->f_pos, ino,

		     fattr.cf_dtype);



	dput(dentry);

	return rc;

}