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This commit is contained in:
attilio 2013-03-12 13:26:12 +00:00
parent f8c9f3ed3f
commit 3c52979cb4
16 changed files with 86 additions and 129 deletions
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33
sys/kern/uipc_mbuf.c
View File

@ -255,25 +255,30 @@ m_freem(struct mbuf *mb)
* Returns:
* Nothing.
*/
void
int
m_extadd(struct mbuf *mb, caddr_t buf, u_int size,
void (*freef)(void *, void *), void *arg1, void *arg2, int flags, int type)
void (*freef)(void *, void *), void *arg1, void *arg2, int flags, int type,
int wait)
{
KASSERT(type != EXT_CLUSTER, ("%s: EXT_CLUSTER not allowed", __func__));
if (type != EXT_EXTREF)
mb->m_ext.ref_cnt = (u_int *)uma_zalloc(zone_ext_refcnt, M_NOWAIT);
if (mb->m_ext.ref_cnt != NULL) {
*(mb->m_ext.ref_cnt) = 1;
mb->m_flags |= (M_EXT | flags);
mb->m_ext.ext_buf = buf;
mb->m_data = mb->m_ext.ext_buf;
mb->m_ext.ext_size = size;
mb->m_ext.ext_free = freef;
mb->m_ext.ext_arg1 = arg1;
mb->m_ext.ext_arg2 = arg2;
mb->m_ext.ext_type = type;
}
mb->m_ext.ref_cnt = uma_zalloc(zone_ext_refcnt, wait);
if (mb->m_ext.ref_cnt == NULL)
return (ENOMEM);
*(mb->m_ext.ref_cnt) = 1;
mb->m_flags |= (M_EXT | flags);
mb->m_ext.ext_buf = buf;
mb->m_data = mb->m_ext.ext_buf;
mb->m_ext.ext_size = size;
mb->m_ext.ext_free = freef;
mb->m_ext.ext_arg1 = arg1;
mb->m_ext.ext_arg2 = arg2;
mb->m_ext.ext_type = type;
return (0);
}
/*

10
sys/kern/uipc_syscalls.c
View File

@ -2222,8 +2222,14 @@ kern_sendfile(struct thread *td, struct sendfile_args *uap,
sf_buf_mext((void *)sf_buf_kva(sf), sf);
break;
}
MEXTADD(m0, sf_buf_kva(sf), PAGE_SIZE, sf_buf_mext,
sfs, sf, M_RDONLY, EXT_SFBUF);
if (m_extadd(m0, (caddr_t )sf_buf_kva(sf), PAGE_SIZE,
sf_buf_mext, sfs, sf, M_RDONLY, EXT_SFBUF,
(mnw ? M_NOWAIT : M_WAITOK)) != 0) {
error = (mnw ? EAGAIN : ENOBUFS);
sf_buf_mext((void *)sf_buf_kva(sf), sf);
m_freem(m0);
break;
}
m0->m_data = (char *)sf_buf_kva(sf) + pgoff;
m0->m_len = xfsize;

4
sys/nfs/krpc_subr.c
View File

@ -459,9 +459,7 @@ xdr_string_encode(char *str, int len)
if (mlen > MCLBYTES) /* If too big, we just can't do it. */
return (NULL);
m = m_get(M_WAITOK, MT_DATA);
if (mlen > MLEN)
MCLGET(m, M_WAITOK);
m = m_get2(M_WAITOK, MT_DATA, 0, mlen);
xs = mtod(m, struct xdr_string *);
m->m_len = mlen;
xs->len = txdr_unsigned(len);

37
sys/nfsclient/nfs_subs.c
View File

@ -171,23 +171,6 @@ nfs_xid_gen(void)
return xid;
}
/*
* Create the header for an rpc request packet
* The hsiz is the size of the rest of the nfs request header.
* (just used to decide if a cluster is a good idea)
*/
struct mbuf *
nfsm_reqhead(struct vnode *vp, u_long procid, int hsiz)
{
struct mbuf *mb;
MGET(mb, M_WAITOK, MT_DATA);
if (hsiz >= MINCLSIZE)
MCLGET(mb, M_WAITOK);
mb->m_len = 0;
return (mb);
}
/*
* copies a uio scatter/gather list to an mbuf chain.
* NOTE: can ony handle iovcnt == 1
@ -218,10 +201,10 @@ nfsm_uiotombuf(struct uio *uiop, struct mbuf **mq, int siz, caddr_t *bpos)
while (left > 0) {
mlen = M_TRAILINGSPACE(mp);
if (mlen == 0) {
MGET(mp, M_WAITOK, MT_DATA);
if (clflg)
MCLGET(mp, M_WAITOK);
mp->m_len = 0;
mp = m_getcl(M_WAITOK, MT_DATA, 0);
else
mp = m_get(M_WAITOK, MT_DATA);
mp2->m_next = mp;
mp2 = mp;
mlen = M_TRAILINGSPACE(mp);
@ -251,8 +234,7 @@ nfsm_uiotombuf(struct uio *uiop, struct mbuf **mq, int siz, caddr_t *bpos)
}
if (rem > 0) {
if (rem > M_TRAILINGSPACE(mp)) {
MGET(mp, M_WAITOK, MT_DATA);
mp->m_len = 0;
mp = m_get(M_WAITOK, MT_DATA);
mp2->m_next = mp;
}
cp = mtod(mp, caddr_t)+mp->m_len;
@ -296,10 +278,13 @@ nfsm_strtmbuf(struct mbuf **mb, char **bpos, const char *cp, long siz)
}
/* Loop around adding mbufs */
while (siz > 0) {
MGET(m1, M_WAITOK, MT_DATA);
if (siz > MLEN)
MCLGET(m1, M_WAITOK);
m1->m_len = NFSMSIZ(m1);
if (siz > MLEN) {
m1 = m_getcl(M_WAITOK, MT_DATA, 0);
m1->m_len = MCLBYTES;
} else {
m1 = m_get(M_WAITOK, MT_DATA);
m1->m_len = MLEN;
}
m2->m_next = m1;
m2 = m1;
tl = mtod(m1, u_int32_t *);

4
sys/nfsclient/nfs_vfsops.c
View File

@ -298,7 +298,7 @@ nfs_statfs(struct mount *mp, struct statfs *sbp)
} else
mtx_unlock(&nmp->nm_mtx);
nfsstats.rpccnt[NFSPROC_FSSTAT]++;
mreq = nfsm_reqhead(vp, NFSPROC_FSSTAT, NFSX_FH(v3));
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -356,7 +356,7 @@ nfs_fsinfo(struct nfsmount *nmp, struct vnode *vp, struct ucred *cred,
u_int64_t maxfsize;
nfsstats.rpccnt[NFSPROC_FSINFO]++;
mreq = nfsm_reqhead(vp, NFSPROC_FSINFO, NFSX_FH(1));
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(1));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, 1);

64
sys/nfsclient/nfs_vnops.c
View File

@ -294,7 +294,7 @@ nfs3_access_otw(struct vnode *vp, int wmode, struct thread *td,
struct nfsnode *np = VTONFS(vp);
nfsstats.rpccnt[NFSPROC_ACCESS]++;
mreq = nfsm_reqhead(vp, NFSPROC_ACCESS, NFSX_FH(v3) + NFSX_UNSIGNED);
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(v3) + NFSX_UNSIGNED);
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -714,7 +714,7 @@ nfs_getattr(struct vop_getattr_args *ap)
goto nfsmout;
}
nfsstats.rpccnt[NFSPROC_GETATTR]++;
mreq = nfsm_reqhead(vp, NFSPROC_GETATTR, NFSX_FH(v3));
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -873,7 +873,7 @@ nfs_setattrrpc(struct vnode *vp, struct vattr *vap, struct ucred *cred)
int v3 = NFS_ISV3(vp);
nfsstats.rpccnt[NFSPROC_SETATTR]++;
mreq = nfsm_reqhead(vp, NFSPROC_SETATTR, NFSX_FH(v3) + NFSX_SATTR(v3));
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(v3) + NFSX_SATTR(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -1037,8 +1037,8 @@ nfs_lookup(struct vop_lookup_args *ap)
nfsstats.lookupcache_misses++;
nfsstats.rpccnt[NFSPROC_LOOKUP]++;
len = cnp->cn_namelen;
mreq = nfsm_reqhead(dvp, NFSPROC_LOOKUP,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len));
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(dvp, v3);
@ -1251,7 +1251,7 @@ nfs_readlinkrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
int v3 = NFS_ISV3(vp);
nfsstats.rpccnt[NFSPROC_READLINK]++;
mreq = nfsm_reqhead(vp, NFSPROC_READLINK, NFSX_FH(v3));
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -1306,7 +1306,8 @@ nfs_readrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
while (tsiz > 0) {
nfsstats.rpccnt[NFSPROC_READ]++;
len = (tsiz > rsize) ? rsize : tsiz;
mreq = nfsm_reqhead(vp, NFSPROC_READ, NFSX_FH(v3) + NFSX_UNSIGNED * 3);
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3) + NFSX_UNSIGNED * 3);
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -1378,8 +1379,8 @@ nfs_writerpc(struct vnode *vp, struct uio *uiop, struct ucred *cred,
while (tsiz > 0) {
nfsstats.rpccnt[NFSPROC_WRITE]++;
len = (tsiz > wsize) ? wsize : tsiz;
mreq = nfsm_reqhead(vp, NFSPROC_WRITE,
NFSX_FH(v3) + 5 * NFSX_UNSIGNED + nfsm_rndup(len));
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3) + 5 * NFSX_UNSIGNED + nfsm_rndup(len));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -1501,8 +1502,8 @@ nfs_mknodrpc(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp,
if ((error = VOP_GETATTR(dvp, &vattr, cnp->cn_cred)) != 0)
return (error);
nfsstats.rpccnt[NFSPROC_MKNOD]++;
mreq = nfsm_reqhead(dvp, NFSPROC_MKNOD, NFSX_FH(v3) + 4 * NFSX_UNSIGNED +
+ nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(v3));
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(v3) + 4 * NFSX_UNSIGNED +
nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(dvp, v3);
@ -1605,8 +1606,8 @@ nfs_create(struct vop_create_args *ap)
fmode |= O_EXCL;
again:
nfsstats.rpccnt[NFSPROC_CREATE]++;
mreq = nfsm_reqhead(dvp, NFSPROC_CREATE, NFSX_FH(v3) + 2 * NFSX_UNSIGNED +
nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(v3));
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(v3) + 2 * NFSX_UNSIGNED +
nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(dvp, v3);
@ -1787,8 +1788,8 @@ nfs_removerpc(struct vnode *dvp, const char *name, int namelen,
int v3 = NFS_ISV3(dvp);
nfsstats.rpccnt[NFSPROC_REMOVE]++;
mreq = nfsm_reqhead(dvp, NFSPROC_REMOVE,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(namelen));
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(namelen));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(dvp, v3);
@ -1923,9 +1924,8 @@ nfs_renamerpc(struct vnode *fdvp, const char *fnameptr, int fnamelen,
int v3 = NFS_ISV3(fdvp);
nfsstats.rpccnt[NFSPROC_RENAME]++;
mreq = nfsm_reqhead(fdvp, NFSPROC_RENAME,
(NFSX_FH(v3) + NFSX_UNSIGNED)*2 + nfsm_rndup(fnamelen) +
nfsm_rndup(tnamelen));
mreq = m_get2(M_WAITOK, MT_DATA, 0, (NFSX_FH(v3) + NFSX_UNSIGNED)*2 +
nfsm_rndup(fnamelen) + nfsm_rndup(tnamelen));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(fdvp, v3);
@ -1983,8 +1983,8 @@ nfs_link(struct vop_link_args *ap)
v3 = NFS_ISV3(vp);
nfsstats.rpccnt[NFSPROC_LINK]++;
mreq = nfsm_reqhead(vp, NFSPROC_LINK,
NFSX_FH(v3)*2 + NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen));
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3)*2 + NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -2029,7 +2029,7 @@ nfs_symlink(struct vop_symlink_args *ap)
nfsstats.rpccnt[NFSPROC_SYMLINK]++;
slen = strlen(ap->a_target);
mreq = nfsm_reqhead(dvp, NFSPROC_SYMLINK, NFSX_FH(v3) + 2*NFSX_UNSIGNED +
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(v3) + 2*NFSX_UNSIGNED +
nfsm_rndup(cnp->cn_namelen) + nfsm_rndup(slen) + NFSX_SATTR(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
@ -2123,8 +2123,8 @@ nfs_mkdir(struct vop_mkdir_args *ap)
return (error);
len = cnp->cn_namelen;
nfsstats.rpccnt[NFSPROC_MKDIR]++;
mreq = nfsm_reqhead(dvp, NFSPROC_MKDIR,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len) + NFSX_SATTR(v3));
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len) + NFSX_SATTR(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(dvp, v3);
@ -2188,8 +2188,8 @@ nfs_rmdir(struct vop_rmdir_args *ap)
if (dvp == vp)
return (EINVAL);
nfsstats.rpccnt[NFSPROC_RMDIR]++;
mreq = nfsm_reqhead(dvp, NFSPROC_RMDIR,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen));
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(dvp, v3);
@ -2307,8 +2307,8 @@ nfs_readdirrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
*/
while (more_dirs && bigenough) {
nfsstats.rpccnt[NFSPROC_READDIR]++;
mreq = nfsm_reqhead(vp, NFSPROC_READDIR, NFSX_FH(v3) +
NFSX_READDIR(v3));
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3) + NFSX_READDIR(v3));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, v3);
@ -2513,8 +2513,8 @@ nfs_readdirplusrpc(struct vnode *vp, struct uio *uiop, struct ucred *cred)
*/
while (more_dirs && bigenough) {
nfsstats.rpccnt[NFSPROC_READDIRPLUS]++;
mreq = nfsm_reqhead(vp, NFSPROC_READDIRPLUS,
NFSX_FH(1) + 6 * NFSX_UNSIGNED);
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(1) + 6 * NFSX_UNSIGNED);
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, 1);
@ -2818,8 +2818,8 @@ nfs_lookitup(struct vnode *dvp, const char *name, int len, struct ucred *cred,
int v3 = NFS_ISV3(dvp);
nfsstats.rpccnt[NFSPROC_LOOKUP]++;
mreq = nfsm_reqhead(dvp, NFSPROC_LOOKUP,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len));
mreq = m_get2(M_WAITOK, MT_DATA, 0,
NFSX_FH(v3) + NFSX_UNSIGNED + nfsm_rndup(len));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(dvp, v3);
@ -2897,7 +2897,7 @@ nfs_commit(struct vnode *vp, u_quad_t offset, int cnt, struct ucred *cred,
}
mtx_unlock(&nmp->nm_mtx);
nfsstats.rpccnt[NFSPROC_COMMIT]++;
mreq = nfsm_reqhead(vp, NFSPROC_COMMIT, NFSX_FH(1));
mreq = m_get2(M_WAITOK, MT_DATA, 0, NFSX_FH(1));
mb = mreq;
bpos = mtod(mb, caddr_t);
nfsm_fhtom(vp, 1);

28
sys/nfsclient/nfsm_subs.h
View File

@ -53,34 +53,6 @@ struct vnode;
* First define what the actual subs. return
*/
u_int32_t nfs_xid_gen(void);
struct mbuf *nfsm_reqhead(struct vnode *vp, u_long procid, int hsiz);
#define M_HASCL(m) ((m)->m_flags & M_EXT)
#define NFSMINOFF(m) \
do { \
if (M_HASCL(m)) \
(m)->m_data = (m)->m_ext.ext_buf; \
else if ((m)->m_flags & M_PKTHDR) \
(m)->m_data = (m)->m_pktdat; \
else \
(m)->m_data = (m)->m_dat; \
} while (0)
#define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \
(((m)->m_flags & M_PKTHDR)?MHLEN:MLEN))
/*
* Now for the macros that do the simple stuff and call the functions
* for the hard stuff.
* These macros use several vars. declared in nfsm_reqhead and these
* vars. must not be used elsewhere unless you are careful not to corrupt
* them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries
* that may be used so long as the value is not expected to retained
* after a macro.
* I know, this is kind of dorkey, but it makes the actual op functions
* fairly clean and deals with the mess caused by the xdr discriminating
* unions.
*/
/* *********************************** */
/* Request generation phase macros */

2
sys/rpc/clnt_dg.c
View File

@ -431,7 +431,7 @@ clnt_dg_call(
send_again:
mtx_unlock(&cs->cs_lock);
MGETHDR(mreq, M_WAITOK, MT_DATA);
mreq = m_gethdr(M_WAITOK, MT_DATA);
KASSERT(cu->cu_mcalllen <= MHLEN, ("RPC header too big"));
bcopy(cu->cu_mcallc, mreq->m_data, cu->cu_mcalllen);
mreq->m_len = cu->cu_mcalllen;

2
sys/rpc/clnt_vc.c
View File

@ -349,7 +349,7 @@ clnt_vc_call(
/*
* Leave space to pre-pend the record mark.
*/
MGETHDR(mreq, M_WAITOK, MT_DATA);
mreq = m_gethdr(M_WAITOK, MT_DATA);
mreq->m_data += sizeof(uint32_t);
KASSERT(ct->ct_mpos + sizeof(uint32_t) <= MHLEN,
("RPC header too big"));

4
sys/rpc/rpc_generic.c
View File

@ -750,9 +750,7 @@ clnt_call_private(
struct mbuf *mrep;
enum clnt_stat stat;
MGET(mreq, M_WAITOK, MT_DATA);
MCLGET(mreq, M_WAITOK);
mreq->m_len = 0;
mreq = m_getcl(M_WAITOK, MT_DATA, 0);
xdrmbuf_create(&xdrs, mreq, XDR_ENCODE);
if (!xargs(&xdrs, argsp)) {

2
sys/rpc/rpcm_subs.h
View File

@ -80,7 +80,7 @@
#define rpcm_build(a,c,s) \
{ if ((s) > M_TRAILINGSPACE(mb)) { \
MGET(mb2, M_WAITOK, MT_DATA); \
mb2 = m_get(M_WAITOK, MT_DATA); \
if ((s) > MLEN) \
panic("build > MLEN"); \
mb->m_next = mb2; \

4
sys/rpc/svc.c
View File

@ -563,9 +563,7 @@ svc_sendreply(struct svc_req *rqstp, xdrproc_t xdr_results, void * xdr_location)
rply.acpted_rply.ar_results.where = NULL;
rply.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
MGET(m, M_WAITOK, MT_DATA);
MCLGET(m, M_WAITOK);
m->m_len = 0;
m = m_getcl(M_WAITOK, MT_DATA, 0);
xdrmbuf_create(&xdrs, m, XDR_ENCODE);
ok = xdr_results(&xdrs, xdr_location);
XDR_DESTROY(&xdrs);

3
sys/rpc/svc_dg.c
View File

@ -238,8 +238,7 @@ svc_dg_reply(SVCXPRT *xprt, struct rpc_msg *msg,
bool_t stat = TRUE;
int error;
MGETHDR(mrep, M_WAITOK, MT_DATA);
mrep->m_len = 0;
mrep = m_gethdr(M_WAITOK, MT_DATA);
xdrmbuf_create(&xdrs, mrep, XDR_ENCODE);

6
sys/rpc/svc_vc.c
View File

@ -796,8 +796,7 @@ svc_vc_reply(SVCXPRT *xprt, struct rpc_msg *msg,
/*
* Leave space for record mark.
*/
MGETHDR(mrep, M_WAITOK, MT_DATA);
mrep->m_len = 0;
mrep = m_gethdr(M_WAITOK, MT_DATA);
mrep->m_data += sizeof(uint32_t);
xdrmbuf_create(&xdrs, mrep, XDR_ENCODE);
@ -850,8 +849,7 @@ svc_vc_backchannel_reply(SVCXPRT *xprt, struct rpc_msg *msg,
/*
* Leave space for record mark.
*/
MGETHDR(mrep, M_WAITOK, MT_DATA);
mrep->m_len = 0;
mrep = m_gethdr(M_WAITOK, MT_DATA);
mrep->m_data += sizeof(uint32_t);
xdrmbuf_create(&xdrs, mrep, XDR_ENCODE);

7
sys/sys/mbuf.h
View File

@ -655,7 +655,8 @@ m_last(struct mbuf *m)
#define MGETHDR(m, how, type) ((m) = m_gethdr((how), (type)))
#define MCLGET(m, how) m_clget((m), (how))
#define MEXTADD(m, buf, size, free, arg1, arg2, flags, type) \
m_extadd((m), (caddr_t)(buf), (size), (free),(arg1),(arg2),(flags), (type))
(void )m_extadd((m), (caddr_t)(buf), (size), (free), (arg1), (arg2),\
(flags), (type), M_NOWAIT)
#define m_getm(m, len, how, type) \
m_getm2((m), (len), (how), (type), M_PKTHDR)
@ -780,8 +781,8 @@ int m_apply(struct mbuf *, int, int,
int (*)(void *, void *, u_int), void *);
int m_append(struct mbuf *, int, c_caddr_t);
void m_cat(struct mbuf *, struct mbuf *);
void m_extadd(struct mbuf *, caddr_t, u_int,
void (*)(void *, void *), void *, void *, int, int);
int m_extadd(struct mbuf *, caddr_t, u_int,
void (*)(void *, void *), void *, void *, int, int, int);
struct mbuf *m_collapse(struct mbuf *, int, int);
void m_copyback(struct mbuf *, int, int, c_caddr_t);
void m_copydata(const struct mbuf *, int, int, caddr_t);

5
sys/vm/vm_page.c
View File

@ -2655,10 +2655,7 @@ vm_page_is_valid(vm_page_t m, int base, int size)
VM_OBJECT_ASSERT_WLOCKED(m->object);
bits = vm_page_bits(base, size);
if (m->valid && ((m->valid & bits) == bits))
return 1;
else
return 0;
return (m->valid != 0 && (m->valid & bits) == bits);
}
/*