[PATCH] smb: client: change allocation requirements in DUP_CTX_STR macro

[Fredric Cover]

From: Fredric Cover <fredric.cover.lkernel@xxxxxxxxx>

Currently, the macro DUP_CTX_STR allocates new_ctx->field using
GFP_ATOMIC. DUP_CTX_STR is only used in smb3_fs_context_dup(), which
is never called in an atomic context. Using GFP_ATOMIC puts unnecessary
pressure on emergency memory pools.

Change GFP_ATOMIC to GFP_KERNEL.

Signed-off-by: Fredric Cover <fredric.cover.lkernel@xxxxxxxxx>
---
 fs/smb/client/fs_context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c
index b9544eb03..a3ccc06c0 100644
--- a/fs/smb/client/fs_context.c
+++ b/fs/smb/client/fs_context.c
@@ -420,7 +420,7 @@ static int parse_symlink_flavor(struct fs_context *fc, char *value,
 #define DUP_CTX_STR(field)						\
 do {									\
 	if (ctx->field) {						\
-		new_ctx->field = kstrdup(ctx->field, GFP_ATOMIC);	\
+		new_ctx->field = kstrdup(ctx->field, GFP_KERNEL);	\
 		if (new_ctx->field == NULL) {				\
 			smb3_cleanup_fs_context_contents(new_ctx);	\
 			return -ENOMEM;					\
-- 
2.53.0