Commit 6ef4e9cb authored by Ronnie Sahlberg's avatar Ronnie Sahlberg Committed by Steve French
Browse files

cifs: add a function to get a cached dir based on its dentry 



Needed for subsequent patches in the directory caching
series.

Signed-off-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 5e9c89d4

fs/cifs/smb2ops.c

+16 −0
Original line number Diff line number Diff line
@@ -925,6 +925,22 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, 
	return rc;

}



int open_cached_dir_by_dentry(struct cifs_tcon *tcon,

			      struct dentry *dentry,

			      struct cached_fid **cfid)

{

	mutex_lock(&tcon->crfid.fid_mutex);

	if (tcon->crfid.dentry == dentry) {

		cifs_dbg(FYI, "found a cached root file handle by dentry\n");

		*cfid = &tcon->crfid;

		kref_get(&tcon->crfid.refcount);

		mutex_unlock(&tcon->crfid.fid_mutex);

		return 0;

	}

	mutex_unlock(&tcon->crfid.fid_mutex);

	return -ENOENT;

}



static void

smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,

	      struct cifs_sb_info *cifs_sb)

fs/cifs/smb2proto.h

+3 −0
Original line number Diff line number Diff line
@@ -73,6 +73,9 @@ extern int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, 
			   const char *path,

			   struct cifs_sb_info *cifs_sb,

			   struct cached_fid **cfid);

extern int open_cached_dir_by_dentry(struct cifs_tcon *tcon,

				     struct dentry *dentry,

				     struct cached_fid **cfid);

extern void close_cached_dir(struct cached_fid *cfid);

extern void close_cached_dir_lease(struct cached_fid *cfid);

extern void close_cached_dir_lease_locked(struct cached_fid *cfid);