Namjae Jeon <linkinjeon@xxxxxxxxx> writes: > From: Namjae Jeon <namjae.jeon@xxxxxxxxxxx> > > update nfs option in filesystem/vfat.txt > > Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx> > Signed-off-by: Ravishankar N <ravi.n1@xxxxxxxxxxx> > Signed-off-by: Amit Sahrawat <a.sahrawat@xxxxxxxxxxx> > --- > Documentation/filesystems/vfat.txt | 23 ++++++++++++++++++----- > 1 file changed, 18 insertions(+), 5 deletions(-) > > diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt > index d230dd9..f663c70 100644 > --- a/Documentation/filesystems/vfat.txt > +++ b/Documentation/filesystems/vfat.txt > @@ -150,13 +150,26 @@ 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= stale_rw|nostale_ro > + -- Enable this only if you want to export the FAT filesystem > over NFS > > + stale_rw: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. > + > + nostale_ro:This option bases the inode number and filehandle on the on-disk > + location of a file in the MS-DOS directory entry.This ensures that ESTALE > + will not be returned after a file is evicted from the inode cache. However, > + it means that operations such as rename, create and unlink could cause > + filehandles that previously pointed at one file to point at a different file, > + potentially causing data corruption. For this reason, this option also mounts > + the filesystem readonly. > + > + To maintain backward compatibility, '-o nfs' is also accepted, defaulting to > + stale_rw Please add whitespace after ":" and ".". And please care 80 columns. -- OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
