The patch titled Subject: Documentation: update nfs option in filesystem/vfat.txt has been removed from the -mm tree. Its filename was documentation-update-nfs-option-in-filesystem-vfattxt.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Namjae Jeon <namjae.jeon@xxxxxxxxxxx> Subject: Documentation: update nfs option in filesystem/vfat.txt Add descriptions about 'stale_rw' and 'nostale_ro' nfs options 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> Acked-by: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx> Acked-by: Rob Landley <rob@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/filesystems/vfat.txt | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff -puN Documentation/filesystems/vfat.txt~documentation-update-nfs-option-in-filesystem-vfattxt Documentation/filesystems/vfat.txt --- a/Documentation/filesystems/vfat.txt~documentation-update-nfs-option-in-filesystem-vfattxt +++ a/Documentation/filesystems/vfat.txt @@ -150,12 +150,28 @@ discard -- If set, issues discard/ 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. +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 - Enable this only if you want to export the FAT filesystem - over NFS <bool>: 0,1,yes,no,true,false _ Patches currently in -mm which might be from namjae.jeon@xxxxxxxxxxx are origin.patch linux-next.patch fat-additions-to-support-fat_fallocate.patch fat-additions-to-support-fat_fallocate-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html