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| author |   Steve French <stfrench@microsoft.com> | 2019-06-24 20:39:04 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2019-07-07 22:37:43 -0500 |
| commit | 9fe5ff1c5d6a2a6c4ed4ba051a858571fdb7834c (patch) | |
| tree | 9568f71d775ca700e6a717a5466c528abfea47c0 /fs/cifs/connect.c | |
| parent | smb3: add new mount option to retrieve mode from special ACE (diff) | |
| download | linux-dev-9fe5ff1c5d6a2a6c4ed4ba051a858571fdb7834c.tar.xz linux-dev-9fe5ff1c5d6a2a6c4ed4ba051a858571fdb7834c.zip | |
smb3: do not send compression info by default
Since in theory a server could respond with compressed read
responses even if not requested on read request (assuming that
a compression negcontext is sent in negotiate protocol) - do
not send compression information during negotiate protocol
unless the user asks for compression explicitly (compression
is experimental), and add a mount warning that compression
is experimental.
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Diffstat (limited to 'fs/cifs/connect.c')
| -rw-r--r-- | fs/cifs/connect.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 07c9cd7637c5..8ad8bbe8003b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -97,6 +97,7 @@ enum { Opt_persistent, Opt_nopersistent, Opt_resilient, Opt_noresilient, Opt_domainauto, Opt_rdma, Opt_modesid, + Opt_compress, /* Mount options which take numeric value */ Opt_backupuid, Opt_backupgid, Opt_uid, @@ -213,6 +214,7 @@ static const match_table_t cifs_mount_option_tokens = { { Opt_echo_interval, "echo_interval=%s" }, { Opt_max_credits, "max_credits=%s" }, { Opt_snapshot, "snapshot=%s" }, + { Opt_compress, "compress=%s" }, { Opt_blank_user, "user=" }, { Opt_blank_user, "username=" }, @@ -1915,6 +1917,11 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, case Opt_rdma: vol->rdma = true; break; + case Opt_compress: + vol->compression = UNKNOWN_TYPE; + cifs_dbg(VFS, + "SMB3 compression support is experimental\n"); + break; /* Numeric Values */ case Opt_backupuid: @@ -2691,6 +2698,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) tcp_ses->sequence_number = 0; tcp_ses->reconnect_instance = 1; tcp_ses->lstrp = jiffies; + tcp_ses->compress_algorithm = cpu_to_le16(volume_info->compression); spin_lock_init(&tcp_ses->req_lock); INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); INIT_LIST_HEAD(&tcp_ses->smb_ses_list); |