From: NeilBrown Date: Fri, 8 Jul 2005 00:59:20 +0000 (-0700) Subject: [PATCH] nfsd4: seqid comments X-Git-Tag: accepted/tizen/common/20141203.182822~44729 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7fb64cee34f5dc743f697041717cafda8a94b5ac;p=platform%2Fkernel%2Flinux-arm64.git [PATCH] nfsd4: seqid comments Add some comments on the use of so_seqid, in an attempt to avoid some of the confusion outlined in the previous patch.... Signed-off-by: J. Bruce Fields Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 5207068..1515c5b 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1210,10 +1210,10 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp) save = resp->p; /* - * Routine for encoding the result of a - * "seqid-mutating" NFSv4 operation. This is - * where seqids are incremented, and the - * replay cache is filled. + * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This + * is where sequence id's are incremented, and the replay cache is filled. + * Note that we increment sequence id's here, at the last moment, so we're sure + * we know whether the error to be returned is a sequence id mutating error. */ #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ diff --git a/include/linux/nfsd/state.h b/include/linux/nfsd/state.h index a84a3fa..2d19431f 100644 --- a/include/linux/nfsd/state.h +++ b/include/linux/nfsd/state.h @@ -203,7 +203,9 @@ struct nfs4_stateowner { int so_is_open_owner; /* 1=openowner,0=lockowner */ u32 so_id; struct nfs4_client * so_client; - u32 so_seqid; + /* after increment in ENCODE_SEQID_OP_TAIL, represents the next + * sequence id expected from the client: */ + u32 so_seqid; struct xdr_netobj so_owner; /* open owner name */ int so_confirmed; /* successful OPEN_CONFIRM? */ struct nfs4_replay so_replay;