From: Steve French Date: Sat, 12 Oct 2019 00:36:13 +0000 (-0700) Subject: cifs: clarify comment about timestamp granularity for old servers X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=553292a6342bc9e5636953ac6e20bccedaacbd1c;p=linux.git cifs: clarify comment about timestamp granularity for old servers It could be confusing why we set granularity to 1 seconds rather than 2 seconds (1 second is the max the VFS allows) for these mounts to very old servers ... Signed-off-by: Steve French --- diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index c049c7b3aa87a..1a135d1b85bd8 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -169,7 +169,13 @@ cifs_read_super(struct super_block *sb) else sb->s_maxbytes = MAX_NON_LFS; - /* Some very old servers like DOS and OS/2 used 2 second granularity */ + /* + * Some very old servers like DOS and OS/2 used 2 second granularity + * (while all current servers use 100ns granularity - see MS-DTYP) + * but 1 second is the maximum allowed granularity for the VFS + * so for old servers set time granularity to 1 second while for + * everything else (current servers) set it to 100ns. + */ if ((tcon->ses->server->vals->protocol_id == SMB10_PROT_ID) && ((tcon->ses->capabilities & tcon->ses->server->vals->cap_nt_find) == 0) &&