[PATCH] Documentation: update mount option in filesystem/vfat.txt

[Namjae Jeon]

update two mount option(discard, nfs) in vfat.txt.

Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxx>
---
 Documentation/filesystems/vfat.txt |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt
index ead764b..dd322a4 100644
--- a/Documentation/filesystems/vfat.txt
+++ b/Documentation/filesystems/vfat.txt
@@ -137,6 +137,17 @@ errors=panic|continue|remount-ro
 		 without doing anything or remount the partition in
 		 read-only mode (default behavior).
 
+discard		  -- If set, issues discard/TRIM commands to the block
+		 device when blocks are freed. This is useful for SSD devices
+		 and sparse/thinly-provisoned LUNs.
+
+nfs			  -- This option maintains an index (cache) of directory
+		 inodes by i_logstart which is used by the nfs-related code to
+		 improve look-ups.
+
+		 Enable this only if you want to export the FAT filesystem
+		 over NFS
+
 <bool>: 0,1,yes,no,true,false
 
 TODO
-- 
1.7.9.5

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