summaryrefslogtreecommitdiff
path: root/fs
diff options
context:
space:
mode:
authorRonnie Sahlberg <lsahlber@redhat.com>2021-03-09 09:07:32 +1000
committerSteve French <stfrench@microsoft.com>2021-04-25 16:28:23 -0500
commit6ef4e9cbe15df691323af007831dab4e70faa1cf (patch)
tree7df2b4ea820fe4c8c79897ac8c8d873c2f7d55ee /fs
parent5e9c89d43fa6f5d458d4d0f9e22a67cc001c8da9 (diff)
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: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/smb2ops.c16
-rw-r--r--fs/cifs/smb2proto.h3
2 files changed, 19 insertions, 0 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 5864ef600ee9..65d303466581 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -925,6 +925,22 @@ oshr_free:
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)
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 28e8d821103c..a5f87b02cfaf 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -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);