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authorKinglong Mee <kinglongmee@gmail.com>2014-06-10 18:08:19 +0800
committerJ. Bruce Fields <bfields@redhat.com>2014-06-23 11:31:36 -0400
commit3c7aa15d2073d81e56e8ba8771a4ab6f23be7ae2 (patch)
treef76a11c503dd24636dbd36dfb9a58aa3d76ad54e /fs/nfsd/nfs3xdr.c
parenta497c3ba1d97fc69c1e78e7b96435ba8c2cb42ee (diff)
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/nfs3xdr.c')
-rw-r--r--fs/nfsd/nfs3xdr.c30
1 files changed, 8 insertions, 22 deletions
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index e6c01e80325e..39c5eb3ad33a 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -120,10 +120,7 @@ decode_sattr3(__be32 *p, struct iattr *iap)
iap->ia_valid |= ATTR_SIZE;
p = xdr_decode_hyper(p, &newsize);
- if (newsize <= NFS_OFFSET_MAX)
- iap->ia_size = newsize;
- else
- iap->ia_size = NFS_OFFSET_MAX;
+ iap->ia_size = min_t(u64, newsize, NFS_OFFSET_MAX);
}
if ((tmp = ntohl(*p++)) == 1) { /* set to server time */
iap->ia_valid |= ATTR_ATIME;
@@ -338,10 +335,8 @@ nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
return 0;
p = xdr_decode_hyper(p, &args->offset);
- len = args->count = ntohl(*p++);
-
- if (len > max_blocksize)
- len = max_blocksize;
+ args->count = ntohl(*p++);
+ len = min(args->count, max_blocksize);
/* set up the kvec */
v=0;
@@ -349,7 +344,7 @@ nfs3svc_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++;
}
@@ -484,9 +479,7 @@ nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p,
}
/* now copy next page if there is one */
if (len && !avail && rqstp->rq_arg.page_len) {
- avail = rqstp->rq_arg.page_len;
- if (avail > PAGE_SIZE)
- avail = PAGE_SIZE;
+ avail = min_t(unsigned int, rqstp->rq_arg.page_len, PAGE_SIZE);
old = page_address(rqstp->rq_arg.pages[0]);
}
while (len && avail && *old) {
@@ -571,10 +564,7 @@ nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p,
args->verf = p; p += 2;
args->dircount = ~0;
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);
@@ -595,10 +585,7 @@ nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p,
args->dircount = ntohl(*p++);
args->count = ntohl(*p++);
- len = (args->count > max_blocksize) ? max_blocksize :
- args->count;
- args->count = len;
-
+ len = args->count = min(args->count, max_blocksize);
while (len > 0) {
struct page *p = *(rqstp->rq_next_page++);
if (!args->buffer)
@@ -913,8 +900,7 @@ encode_entry(struct readdir_cd *ccd, const char *name, int namlen,
*/
/* truncate filename if too long */
- if (namlen > NFS3_MAXNAMLEN)
- namlen = NFS3_MAXNAMLEN;
+ namlen = min(namlen, NFS3_MAXNAMLEN);
slen = XDR_QUADLEN(namlen);
elen = slen + NFS3_ENTRY_BAGGAGE