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authorJakub Kicinski2022-01-27 12:54:16 -0800
committerJakub Kicinski2022-01-27 12:54:16 -0800
commit72d044e4bfa6bd9096536e2e1c62aecfe1a525e4 (patch)
tree0e408f181f5c704ff43cd006f4643c339e04aff1 /fs/cifs/fs_context.c
parente2cf07654efb0fd7bbcb475c6f74be7b5755a8fd (diff)
parent23a46422c56144939c091c76cf389aa863ce9c18 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'fs/cifs/fs_context.c')
-rw-r--r--fs/cifs/fs_context.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c
index e3ed25dc6f3f..7ec35f3f0a5f 100644
--- a/fs/cifs/fs_context.c
+++ b/fs/cifs/fs_context.c
@@ -37,6 +37,8 @@
#include "rfc1002pdu.h"
#include "fs_context.h"
+static DEFINE_MUTEX(cifs_mount_mutex);
+
static const match_table_t cifs_smb_version_tokens = {
{ Smb_1, SMB1_VERSION_STRING },
{ Smb_20, SMB20_VERSION_STRING},
@@ -707,10 +709,14 @@ static int smb3_get_tree_common(struct fs_context *fc)
static int smb3_get_tree(struct fs_context *fc)
{
int err = smb3_fs_context_validate(fc);
+ int ret;
if (err)
return err;
- return smb3_get_tree_common(fc);
+ mutex_lock(&cifs_mount_mutex);
+ ret = smb3_get_tree_common(fc);
+ mutex_unlock(&cifs_mount_mutex);
+ return ret;
}
static void smb3_fs_context_free(struct fs_context *fc)