From: Namjae Jeon <namjae.j...@samsung.com>
update nfs option in filesystem/vfat.txt
Signed-off-by: Namjae Jeon <namjae.j...@samsung.com>
Signed-off-by: Ravishankar N <ravi...@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahra...@samsung.com>
---
Documentation/filesystems/vfat.txt | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/Documentation/filesystems/vfat.txt
b/Documentation/filesystems/vfat.txt
index de1e6c4..3371b8e 100644
--- a/Documentation/filesystems/vfat.txt
+++ b/Documentation/filesystems/vfat.txt
@@ -141,13 +141,22 @@ 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
+nfs=full_unstable|limited_stable
+ -- Enable this only if you want to export the FAT filesystem
over NFS
+ full_unstable:This option maintains an index (cache) of
+ directory inodes by i_logstart which is used by
+ the nfs-related code to improve look-ups.Full file operations
+ (read/write) over NFS is supported but with cache eviction
+ at NFS server, this could result in ESTALE issues.
+
+ limited_stable:This options makes NFS support for FAT as
+ read-only and provides stable inode based on the on-disk
+ location of the MS-DOS directory entry.This helps in
+ reconstruction of the inodes in case of lookup failure,
+ making FAT behaviour stable with respect to ESTALE issues.
+
<bool>: 0,1,yes,no,true,false
TODO
--
1.7.9.5
--
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