From: J.Bruce Fields A comment here incorrectly states that "slack_space" is measured in words, not bytes. Remove the comment, and adjust a variable name and a few comments to clarify the situation. This is pure cleanup; there should be no change in functionality. Signed-off-by: J. Bruce Fields Signed-off-by: Neil Brown Signed-off-by: Andrew Morton --- fs/nfsd/nfs4proc.c | 10 +++++----- include/linux/nfsd/nfsd.h | 4 ++-- 2 files changed, 7 insertions(+), 7 deletions(-) diff -puN fs/nfsd/nfs4proc.c~knfsd-nfsd4-clarify-units-of-compound_slack_space fs/nfsd/nfs4proc.c --- a/fs/nfsd/nfs4proc.c~knfsd-nfsd4-clarify-units-of-compound_slack_space +++ a/fs/nfsd/nfs4proc.c @@ -740,7 +740,7 @@ nfsd4_proc_compound(struct svc_rqst *rqs struct svc_fh *current_fh = NULL; struct svc_fh *save_fh = NULL; struct nfs4_stateowner *replay_owner = NULL; - int slack_space; /* in words, not bytes! */ + int slack_bytes; __be32 status; status = nfserr_resource; @@ -790,10 +790,10 @@ nfsd4_proc_compound(struct svc_rqst *rqs * failed response to the next operation. If we don't * have enough room, fail with ERR_RESOURCE. */ -/* FIXME - is slack_space *really* words, or bytes??? - neilb */ - slack_space = (char *)resp->end - (char *)resp->p; - if (slack_space < COMPOUND_SLACK_SPACE + COMPOUND_ERR_SLACK_SPACE) { - BUG_ON(slack_space < COMPOUND_ERR_SLACK_SPACE); + slack_bytes = (char *)resp->end - (char *)resp->p; + if (slack_bytes < COMPOUND_SLACK_SPACE + + COMPOUND_ERR_SLACK_SPACE) { + BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE); op->status = nfserr_resource; goto encode_op; } diff -puN include/linux/nfsd/nfsd.h~knfsd-nfsd4-clarify-units-of-compound_slack_space include/linux/nfsd/nfsd.h --- a/include/linux/nfsd/nfsd.h~knfsd-nfsd4-clarify-units-of-compound_slack_space +++ a/include/linux/nfsd/nfsd.h @@ -275,12 +275,12 @@ static inline int is_fsid(struct svc_fh * we might process an operation with side effects, and be unable to * tell the client that the operation succeeded. * - * COMPOUND_SLACK_SPACE - this is the minimum amount of buffer space + * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space * needed to encode an "ordinary" _successful_ operation. (GETATTR, * READ, READDIR, and READLINK have their own buffer checks.) if we * fall below this level, we fail the next operation with NFS4ERR_RESOURCE. * - * COMPOUND_ERR_SLACK_SPACE - this is the minimum amount of buffer space + * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space * needed to encode an operation which has failed with NFS4ERR_RESOURCE. * care is taken to ensure that we never fall below this level for any * reason. _