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authorKinglong Mee <kinglongmee@gmail.com>2014-06-10 14:08:19 +0400
committerJ. Bruce Fields <bfields@redhat.com>2014-06-23 19:31:36 +0400
commit3c7aa15d2073d81e56e8ba8771a4ab6f23be7ae2 (patch)
treef76a11c503dd24636dbd36dfb9a58aa3d76ad54e /fs/nfsd/nfsxdr.c
parenta497c3ba1d97fc69c1e78e7b96435ba8c2cb42ee (diff)
downloadlinux-3c7aa15d2073d81e56e8ba8771a4ab6f23be7ae2.tar.xz
NFSD: Using min/max/min_t/max_t for calculate
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfsxdr.c')
-rw-r--r--fs/nfsd/nfsxdr.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index 1ac306b769df..412d7061f9e5 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -257,8 +257,7 @@ nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
len = args->count = ntohl(*p++);
p++; /* totalcount - unused */
- if (len > NFSSVC_MAXBLKSIZE_V2)
- len = NFSSVC_MAXBLKSIZE_V2;
+ len = min_t(unsigned int, len, NFSSVC_MAXBLKSIZE_V2);
/* set up somewhere to store response.
* We take pages, put them on reslist and include in iovec
@@ -268,7 +267,7 @@ nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
struct page *p = *(rqstp->rq_next_page++);
rqstp->rq_vec[v].iov_base = page_address(p);
- rqstp->rq_vec[v].iov_len = len < PAGE_SIZE?len:PAGE_SIZE;
+ rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
len -= rqstp->rq_vec[v].iov_len;
v++;
}
@@ -400,9 +399,7 @@ nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p,
return 0;
args->cookie = ntohl(*p++);
args->count = ntohl(*p++);
- if (args->count > PAGE_SIZE)
- args->count = PAGE_SIZE;
-
+ args->count = min_t(u32, args->count, PAGE_SIZE);
args->buffer = page_address(*(rqstp->rq_next_page++));
return xdr_argsize_check(rqstp, p);
@@ -516,10 +513,11 @@ nfssvc_encode_entry(void *ccdv, const char *name,
}
if (cd->offset)
*cd->offset = htonl(offset);
- if (namlen > NFS2_MAXNAMLEN)
- namlen = NFS2_MAXNAMLEN;/* truncate filename */
+ /* truncate filename */
+ namlen = min(namlen, NFS2_MAXNAMLEN);
slen = XDR_QUADLEN(namlen);
+
if ((buflen = cd->buflen - slen - 4) < 0) {
cd->common.err = nfserr_toosmall;
return -EINVAL;