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cifs: update README to include details about 'fsc' option

Message ID 4C5ABB0D.6000504@suse.de (mailing list archive)
State New, archived
Headers show

Commit Message

Suresh Jayaraman Aug. 5, 2010, 1:22 p.m. UTC
None
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Patch

diff --git a/fs/cifs/README b/fs/cifs/README
index a7081ee..7099a52 100644
--- a/fs/cifs/README
+++ b/fs/cifs/README
@@ -301,6 +301,16 @@  A partial list of the supported mount options follows:
   gid		Set the default gid for inodes (similar to above).
   file_mode     If CIFS Unix extensions are not supported by the server
 		this overrides the default mode for file inodes.
+  fsc		Enable local disk caching using FS-Cache (off by default). This
+  		option could be useful to improve performance on a slow link,
+		heavily loaded server and/or network where reading from the
+		disk is faster than reading from the server (over the network).
+		This could also impact scalability positively as the
+		number of calls to the server are reduced. However, local
+		caching is not suitable for all workloads for e.g. read-once
+		type workloads. So, you need to consider carefully your
+		workload/scenario before using this option. Currently, local
+		disk caching is functional for CIFS files opened as read-only.
   dir_mode      If CIFS Unix extensions are not supported by the server 
 		this overrides the default mode for directory inodes.
   port		attempt to contact the server on this tcp port, before