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-rw-r--r--fs/cifs/cifsglob.h12
-rw-r--r--fs/cifs/cifsproto.h1
-rw-r--r--fs/cifs/cifssmb.c8
-rw-r--r--fs/cifs/misc.c7
-rw-r--r--fs/cifs/smb2misc.c16
-rw-r--r--fs/cifs/smb2ops.c34
6 files changed, 58 insertions, 20 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 1efa2e65bc1a..ff71fbd619bf 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -883,6 +883,14 @@ cap_unix(struct cifs_ses *ses)
return ses->server->vals->cap_unix & ses->capabilities;
}
+struct cached_fid {
+ bool is_valid:1; /* Do we have a useable root fid */
+ struct cifs_fid *fid;
+ struct mutex fid_mutex;
+ struct cifs_tcon *tcon;
+ struct work_struct lease_break;
+};
+
/*
* there is one of these for each connection to a resource on a particular
* session
@@ -987,9 +995,7 @@ struct cifs_tcon {
struct fscache_cookie *fscache; /* cookie for share */
#endif
struct list_head pending_opens; /* list of incomplete opens */
- bool valid_root_fid:1; /* Do we have a useable root fid */
- struct mutex prfid_mutex; /* prevents reopen race after dead ses*/
- struct cifs_fid *prfid; /* handle to the directory at top of share */
+ struct cached_fid crfid; /* Cached root fid */
/* BB add field for back pointer to sb struct(s)? */
};
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 4e0d183c3d10..3a13b44069fe 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -552,6 +552,7 @@ enum securityEnum cifs_select_sectype(struct TCP_Server_Info *,
struct cifs_aio_ctx *cifs_aio_ctx_alloc(void);
void cifs_aio_ctx_release(struct kref *refcount);
int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw);
+void smb2_cached_lease_break(struct work_struct *work);
int cifs_alloc_hash(const char *name, struct crypto_shash **shash,
struct sdesc **sdesc);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 42329b25877d..d352da325de3 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -107,10 +107,10 @@ cifs_mark_open_files_invalid(struct cifs_tcon *tcon)
}
spin_unlock(&tcon->open_file_lock);
- mutex_lock(&tcon->prfid_mutex);
- tcon->valid_root_fid = false;
- memset(tcon->prfid, 0, sizeof(struct cifs_fid));
- mutex_unlock(&tcon->prfid_mutex);
+ mutex_lock(&tcon->crfid.fid_mutex);
+ tcon->crfid.is_valid = false;
+ memset(tcon->crfid.fid, 0, sizeof(struct cifs_fid));
+ mutex_unlock(&tcon->crfid.fid_mutex);
/*
* BB Add call to invalidate_inodes(sb) for all superblocks mounted
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index af29ade195c0..bb40f3c050f6 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -117,8 +117,9 @@ tconInfoAlloc(void)
INIT_LIST_HEAD(&ret_buf->openFileList);
INIT_LIST_HEAD(&ret_buf->tcon_list);
spin_lock_init(&ret_buf->open_file_lock);
- mutex_init(&ret_buf->prfid_mutex);
- ret_buf->prfid = kzalloc(sizeof(struct cifs_fid), GFP_KERNEL);
+ mutex_init(&ret_buf->crfid.fid_mutex);
+ ret_buf->crfid.fid = kzalloc(sizeof(struct cifs_fid),
+ GFP_KERNEL);
#ifdef CONFIG_CIFS_STATS
spin_lock_init(&ret_buf->stat_lock);
#endif
@@ -136,7 +137,7 @@ tconInfoFree(struct cifs_tcon *buf_to_free)
atomic_dec(&tconInfoAllocCount);
kfree(buf_to_free->nativeFileSystem);
kzfree(buf_to_free->password);
- kfree(buf_to_free->prfid);
+ kfree(buf_to_free->crfid.fid);
kfree(buf_to_free);
}
diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index e2bec47c6845..0de87ca33e2e 100644
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -492,10 +492,11 @@ cifs_ses_oplock_break(struct work_struct *work)
{
struct smb2_lease_break_work *lw = container_of(work,
struct smb2_lease_break_work, lease_break);
- int rc;
+ int rc = 0;
rc = SMB2_lease_break(0, tlink_tcon(lw->tlink), lw->lease_key,
lw->lease_state);
+
cifs_dbg(FYI, "Lease release rc %d\n", rc);
cifs_put_tlink(lw->tlink);
kfree(lw);
@@ -561,6 +562,7 @@ smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp,
open->oplock = lease_state;
}
+
return found;
}
@@ -603,6 +605,18 @@ smb2_is_valid_lease_break(char *buffer)
return true;
}
spin_unlock(&tcon->open_file_lock);
+
+ if (tcon->crfid.is_valid &&
+ !memcmp(rsp->LeaseKey,
+ tcon->crfid.fid->lease_key,
+ SMB2_LEASE_KEY_SIZE)) {
+ INIT_WORK(&tcon->crfid.lease_break,
+ smb2_cached_lease_break);
+ queue_work(cifsiod_wq,
+ &tcon->crfid.lease_break);
+ spin_unlock(&cifs_tcp_ses_lock);
+ return true;
+ }
}
}
}
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index b15f5957d645..682bcfa246be 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -323,6 +323,21 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
}
#endif /* STATS2 */
+void
+smb2_cached_lease_break(struct work_struct *work)
+{
+ struct cached_fid *cfid = container_of(work,
+ struct cached_fid, lease_break);
+ mutex_lock(&cfid->fid_mutex);
+ if (cfid->is_valid) {
+ cifs_dbg(FYI, "clear cached root file handle\n");
+ SMB2_close(0, cfid->tcon, cfid->fid->persistent_fid,
+ cfid->fid->volatile_fid);
+ cfid->is_valid = false;
+ }
+ mutex_unlock(&cfid->fid_mutex);
+}
+
/*
* Open the directory at the root of a share
*/
@@ -331,13 +346,13 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
struct cifs_open_parms oparams;
int rc;
__le16 srch_path = 0; /* Null - since an open of top of share */
- u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ u8 oplock = SMB2_OPLOCK_LEVEL_II;
- mutex_lock(&tcon->prfid_mutex);
- if (tcon->valid_root_fid) {
+ mutex_lock(&tcon->crfid.fid_mutex);
+ if (tcon->crfid.is_valid) {
cifs_dbg(FYI, "found a cached root file handle\n");
- memcpy(pfid, tcon->prfid, sizeof(struct cifs_fid));
- mutex_unlock(&tcon->prfid_mutex);
+ memcpy(pfid, tcon->crfid.fid, sizeof(struct cifs_fid));
+ mutex_unlock(&tcon->crfid.fid_mutex);
return 0;
}
@@ -350,10 +365,11 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL, NULL);
if (rc == 0) {
- memcpy(tcon->prfid, pfid, sizeof(struct cifs_fid));
- tcon->valid_root_fid = true;
+ memcpy(tcon->crfid.fid, pfid, sizeof(struct cifs_fid));
+ tcon->crfid.tcon = tcon;
+ tcon->crfid.is_valid = true;
}
- mutex_unlock(&tcon->prfid_mutex);
+ mutex_unlock(&tcon->crfid.fid_mutex);
return rc;
}
@@ -436,7 +452,7 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_open_parms oparms;
struct cifs_fid fid;
- if ((*full_path == 0) && tcon->valid_root_fid)
+ if ((*full_path == 0) && tcon->crfid.is_valid)
return 0;
utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 07:46:58 +0300