[PATCH 5.13 275/300] smb3: fix posix extensions mount option

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From: Steve French <stfrench@xxxxxxxxxxxxx>

commit 7321be2663da5922343cc121f1ff04924cee2e76 upstream.

We were incorrectly initializing the posix extensions in the
conversion to the new mount API.

CC: <stable@xxxxxxxxxxxxxxx> # 5.11+
Reported-by: Christian Brauner <christian.brauner@xxxxxxxxxx>
Acked-by: Christian Brauner <christian.brauner@xxxxxxxxxx>
Suggested-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 fs/cifs/fs_context.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

--- a/fs/cifs/fs_context.c
+++ b/fs/cifs/fs_context.c
@@ -1259,10 +1259,17 @@ static int smb3_fs_context_parse_param(s
 			ctx->posix_paths = 1;
 		break;
 	case Opt_unix:
-		if (result.negated)
+		if (result.negated) {
+			if (ctx->linux_ext == 1)
+				pr_warn_once("conflicting posix mount options specified\n");
 			ctx->linux_ext = 0;
-		else
 			ctx->no_linux_ext = 1;
+		} else {
+			if (ctx->no_linux_ext == 1)
+				pr_warn_once("conflicting posix mount options specified\n");
+			ctx->linux_ext = 1;
+			ctx->no_linux_ext = 0;
+		}
 		break;
 	case Opt_nocase:
 		ctx->nocase = 1;





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