This wrapper structure will later be expanded to contain a list of
fids that are cached and not just the root fid.
Signed-off-by: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
---
fs/cifs/cached_dir.c | 50 ++++++++++++++++++++++++--------------------
fs/cifs/cached_dir.h | 8 +++++--
fs/cifs/cifsglob.h | 2 +-
fs/cifs/misc.c | 6 +++---
4 files changed, 37 insertions(+), 29 deletions(-)
diff --git a/fs/cifs/cached_dir.c b/fs/cifs/cached_dir.c
index b401339f6e73..c2f5b71a3c9f 100644
--- a/fs/cifs/cached_dir.c
+++ b/fs/cifs/cached_dir.c
@@ -52,7 +52,7 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
dentry = cifs_sb->root;
- cfid = tcon->cfid;
+ cfid = &tcon->cfids->cfid;
mutex_lock(&cfid->fid_mutex);
if (cfid->is_valid) {
cifs_dbg(FYI, "found a cached root file handle\n");
@@ -226,7 +226,7 @@ int open_cached_dir_by_dentry(struct cifs_tcon *tcon,
{
struct cached_fid *cfid;
- cfid = tcon->cfid;
+ cfid = &tcon->cfids->cfid;
mutex_lock(&cfid->fid_mutex);
if (cfid->dentry == dentry) {
@@ -320,7 +320,7 @@ void close_all_cached_dirs(struct cifs_sb_info *cifs_sb)
tcon = tlink_tcon(tlink);
if (IS_ERR(tcon))
continue;
- cfid = tcon->cfid;
+ cfid = &tcon->cfids->cfid;
mutex_lock(&cfid->fid_mutex);
if (cfid->dentry) {
dput(cfid->dentry);
@@ -336,12 +336,14 @@ void close_all_cached_dirs(struct cifs_sb_info *cifs_sb)
*/
void invalidate_all_cached_dirs(struct cifs_tcon *tcon)
{
- mutex_lock(&tcon->cfid->fid_mutex);
- tcon->cfid->is_valid = false;
+ struct cached_fid *cfid = &tcon->cfids->cfid;
+
+ mutex_lock(&cfid->fid_mutex);
+ cfid->is_valid = false;
/* cached handle is not valid, so SMB2_CLOSE won't be sent below */
- close_cached_dir_lease_locked(tcon->cfid);
- memset(&tcon->cfid->fid, 0, sizeof(struct cifs_fid));
- mutex_unlock(&tcon->cfid->fid_mutex);
+ close_cached_dir_lease_locked(cfid);
+ memset(&cfid->fid, 0, sizeof(struct cifs_fid));
+ mutex_unlock(&cfid->fid_mutex);
}
static void
@@ -355,34 +357,36 @@ smb2_cached_lease_break(struct work_struct *work)
int cached_dir_lease_break(struct cifs_tcon *tcon, __u8 lease_key[16])
{
- if (tcon->cfid->is_valid &&
+ struct cached_fid *cfid = &tcon->cfids->cfid;
+
+ if (cfid->is_valid &&
!memcmp(lease_key,
- tcon->cfid->fid.lease_key,
+ cfid->fid.lease_key,
SMB2_LEASE_KEY_SIZE)) {
- tcon->cfid->time = 0;
- INIT_WORK(&tcon->cfid->lease_break,
+ cfid->time = 0;
+ INIT_WORK(&cfid->lease_break,
smb2_cached_lease_break);
queue_work(cifsiod_wq,
- &tcon->cfid->lease_break);
+ &cfid->lease_break);
return true;
}
return false;
}
-struct cached_fid *init_cached_dir(void)
+struct cached_fids *init_cached_dirs(void)
{
- struct cached_fid *cfid;
+ struct cached_fids *cfids;
- cfid = kzalloc(sizeof(*cfid), GFP_KERNEL);
- if (!cfid)
+ cfids = kzalloc(sizeof(*cfids), GFP_KERNEL);
+ if (!cfids)
return NULL;
- INIT_LIST_HEAD(&cfid->dirents.entries);
- mutex_init(&cfid->dirents.de_mutex);
- mutex_init(&cfid->fid_mutex);
- return cfid;
+ INIT_LIST_HEAD(&cfids->cfid.dirents.entries);
+ mutex_init(&cfids->cfid.dirents.de_mutex);
+ mutex_init(&cfids->cfid.fid_mutex);
+ return cfids;
}
-void free_cached_dir(struct cifs_tcon *tcon)
+void free_cached_dirs(struct cached_fids *cfids)
{
- kfree(tcon->cfid);
+ kfree(cfids);
}
diff --git a/fs/cifs/cached_dir.h b/fs/cifs/cached_dir.h
index bd262dc8b179..e430e1102296 100644
--- a/fs/cifs/cached_dir.h
+++ b/fs/cifs/cached_dir.h
@@ -45,8 +45,12 @@ struct cached_fid {
struct cached_dirents dirents;
};
-extern struct cached_fid *init_cached_dir(void);
-extern void free_cached_dir(struct cifs_tcon *tcon);
+struct cached_fids {
+ struct cached_fid cfid;
+};
+
+extern struct cached_fids *init_cached_dirs(void);
+extern void free_cached_dirs(struct cached_fids *cfids);
extern int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
const char *path,
struct cifs_sb_info *cifs_sb,
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index f15d7b0c123d..768003e52cc9 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1221,7 +1221,7 @@ struct cifs_tcon {
struct fscache_volume *fscache; /* cookie for share */
#endif
struct list_head pending_opens; /* list of incomplete opens */
- struct cached_fid *cfid; /* Cached root fid */
+ struct cached_fids *cfids;
/* BB add field for back pointer to sb struct(s)? */
#ifdef CONFIG_CIFS_DFS_UPCALL
struct list_head ulist; /* cache update list */
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 87f60f736731..5cb7e1ae00a4 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -117,8 +117,8 @@ tconInfoAlloc(void)
ret_buf = kzalloc(sizeof(*ret_buf), GFP_KERNEL);
if (!ret_buf)
return NULL;
- ret_buf->cfid = init_cached_dir();
- if (!ret_buf->cfid) {
+ ret_buf->cfids = init_cached_dirs();
+ if (!ret_buf->cfids) {
kfree(ret_buf);
return NULL;
}
@@ -144,7 +144,7 @@ tconInfoFree(struct cifs_tcon *tcon)
cifs_dbg(FYI, "Null buffer passed to tconInfoFree\n");
return;
}
- free_cached_dir(tcon);
+ free_cached_dirs(tcon->cfids);
atomic_dec(&tconInfoAllocCount);
kfree(tcon->nativeFileSystem);
kfree_sensitive(tcon->password);
--
2.35.3
