Merge: [CIFS] Sync with upstream for RHEL 9.6

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/6282

JIRA: https://issues.redhat.com/browse/RHEL-76046

Signed-off-by: Paulo Alcantara <paalcant@redhat.com>

Approved-by: Jay Shin <jaeshin@redhat.com>
Approved-by: Benjamin Coddington <bcodding@redhat.com>
Approved-by: Scott Mayhew <smayhew@redhat.com>
Approved-by: Rafael Aquini <raquini@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Patrick Talbert <ptalbert@redhat.com>

Author: ptalbert

fs/smb/client/Kconfig

@@ -201,4 +201,18 @@ config CIFS_ROOT
 
 	  Most people say N here.
 
+config CIFS_COMPRESSION
+	bool "SMB message compression (Experimental)"
+	depends on CIFS
+	default n
+	help
+	  Enables over-the-wire message compression for SMB 3.1.1
+	  mounts when negotiated with the server.
+
+	  Only write requests with data size >= PAGE_SIZE will be
+	  compressed to avoid wasting resources.
+
+	  Say Y here if you want SMB traffic to be compressed.
+	  If unsure, say N.
+
 endif

fs/smb/client/Makefile

@@ -33,3 +33,5 @@ cifs-$(CONFIG_CIFS_SMB_DIRECT) += smbdirect.o
 cifs-$(CONFIG_CIFS_ROOT) += cifsroot.o
 
 cifs-$(CONFIG_CIFS_ALLOW_INSECURE_LEGACY) += smb1ops.o cifssmb.o
+
+cifs-$(CONFIG_CIFS_COMPRESSION) += compress.o compress/lz77.o