{"id":2234251,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2234251/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260507134448.168602-4-rajasimandalos@gmail.com/","project":{"id":12,"url":"http://patchwork.ozlabs.org/api/1.2/projects/12/?format=json","name":"Linux CIFS Client","link_name":"linux-cifs-client","list_id":"linux-cifs.vger.kernel.org","list_email":"linux-cifs@vger.kernel.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260507134448.168602-4-rajasimandalos@gmail.com>","list_archive_url":null,"date":"2026-05-07T13:44:43","name":"[v2,3/8] smb: client: sync retrans on remount","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"e5d52a4c3a321a9e615344bfc7de101a6c7814fe","submitter":{"id":91740,"url":"http://patchwork.ozlabs.org/api/1.2/people/91740/?format=json","name":"RAJASI MANDAL","email":"rajasimandalos@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260507134448.168602-4-rajasimandalos@gmail.com/mbox/","series":[{"id":503184,"url":"http://patchwork.ozlabs.org/api/1.2/series/503184/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=503184","date":"2026-05-07T13:44:40","name":"Remount patches v2","version":2,"mbox":"http://patchwork.ozlabs.org/series/503184/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2234251/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2234251/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-cifs@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=r5khwji3;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c09:e001:a7::12fc:5321; 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Although remount already stored\nthe new value in cifs_sb->ctx, it was never propagated to\nserver->retrans, so the running connection kept using the old count.\n\nIntroduce smb3_sync_server_opts() to push ctx options that live on\nTCP_Server_Info into the live server struct after a successful\nremount. For now it handles retrans; subsequent patches will extend\nit to other server-level knobs.\n\nThe assignment is guarded (if ctx->retrans) so that a bare\n'mount -o remount' (which re-parses /proc/mounts and gets\nretrans=0 because cifs_show_options does not print it) does not\naccidentally reset the value to zero.\n\nSigned-off-by: Rajasi Mandal \n---\n fs/smb/client/fs_context.c | 19 +++++++++++++++++++\n 1 file changed, 19 insertions(+)","diff":"diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c\nindex 20c17f7cbbf8..de682a5d2b68 100644\n--- a/fs/smb/client/fs_context.c\n+++ b/fs/smb/client/fs_context.c\n@@ -1296,6 +1296,23 @@ static void smb3_sync_tcon_opts(struct cifs_sb_info *cifs_sb,\n \tspin_unlock(&cifs_sb->tlink_tree_lock);\n }\n \n+/*\n+ * Synchronize server-level options that are stored on TCP_Server_Info\n+ * at mount time. These fields are consulted at runtime (retry logic)\n+ * so remount needs to update the live server struct in addition to\n+ * cifs_sb->ctx.\n+ */\n+static void smb3_sync_server_opts(struct cifs_sb_info *cifs_sb)\n+{\n+\tstruct TCP_Server_Info *server = cifs_sb_master_tcon(cifs_sb)->ses->server;\n+\tstruct smb3_fs_context *ctx = cifs_sb->ctx;\n+\n+\tspin_lock(&server->srv_lock);\n+\tif (ctx->retrans)\n+\t\tserver->retrans = ctx->retrans;\n+\tspin_unlock(&server->srv_lock);\n+}\n+\n static int smb3_reconfigure(struct fs_context *fc)\n {\n \tstruct smb3_fs_context *ctx = smb3_fc2context(fc);\n@@ -1431,6 +1448,8 @@ static int smb3_reconfigure(struct fs_context *fc)\n #endif\n \tif (!rc)\n \t\tsmb3_sync_tcon_opts(cifs_sb, cifs_sb->ctx);\n+\tif (!rc)\n+\t\tsmb3_sync_server_opts(cifs_sb);\n \n \treturn rc;\n }\n","prefixes":["v2","3/8"]}