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RDS: cleanup: remove "== NULL"s and "!= NULL"s in ptr comparisons 

Favor "if (foo)" style over "if (foo != NULL)".

Signed-off-by: Andy Grover <andy.grover@oracle.com>
This commit is contained in:
Andy Grover 2010-01-12 11:56:44 -08:00
parent 2dc3935734
commit 8690bfa17a
26 changed files with 90 additions and 90 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/rds/af_rds.c
View File

@ -62,7 +62,7 @@ static int rds_release(struct socket *sock)
struct rds_sock *rs;
unsigned long flags;
if (sk == NULL)
if (!sk)
goto out;
rs = rds_sk_to_rs(sk);

4
net/rds/bind.c
View File

@ -121,7 +121,7 @@ static int rds_add_bound(struct rds_sock *rs, __be32 addr, __be16 *port)
do {
if (rover == 0)
rover++;
if (rds_bind_tree_walk(addr, cpu_to_be16(rover), rs) == NULL) {
if (!rds_bind_tree_walk(addr, cpu_to_be16(rover), rs)) {
*port = cpu_to_be16(rover);
ret = 0;
break;
@ -184,7 +184,7 @@ int rds_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
goto out;
trans = rds_trans_get_preferred(sin->sin_addr.s_addr);
if (trans == NULL) {
if (!trans) {
ret = -EADDRNOTAVAIL;
rds_remove_bound(rs);
if (printk_ratelimit())

6
net/rds/cong.c
View File

@ -141,7 +141,7 @@ static struct rds_cong_map *rds_cong_from_addr(__be32 addr)
unsigned long flags;
map = kzalloc(sizeof(struct rds_cong_map), GFP_KERNEL);
if (map == NULL)
if (!map)
return NULL;
map->m_addr = addr;
@ -159,7 +159,7 @@ static struct rds_cong_map *rds_cong_from_addr(__be32 addr)
ret = rds_cong_tree_walk(addr, map);
spin_unlock_irqrestore(&rds_cong_lock, flags);
if (ret == NULL) {
if (!ret) {
ret = map;
map = NULL;
}
@ -205,7 +205,7 @@ int rds_cong_get_maps(struct rds_connection *conn)
conn->c_lcong = rds_cong_from_addr(conn->c_laddr);
conn->c_fcong = rds_cong_from_addr(conn->c_faddr);
if (conn->c_lcong == NULL || conn->c_fcong == NULL)
if (!(conn->c_lcong && conn->c_fcong))
return -ENOMEM;
return 0;

4
net/rds/connection.c
View File

@ -148,7 +148,7 @@ static struct rds_connection *__rds_conn_create(__be32 laddr, __be32 faddr,
goto out;
conn = kmem_cache_zalloc(rds_conn_slab, gfp);
if (conn == NULL) {
if (!conn) {
conn = ERR_PTR(-ENOMEM);
goto out;
}
@ -502,7 +502,7 @@ int __init rds_conn_init(void)
rds_conn_slab = kmem_cache_create("rds_connection",
sizeof(struct rds_connection),
0, 0, NULL);
if (rds_conn_slab == NULL)
if (!rds_conn_slab)
return -ENOMEM;
rds_info_register_func(RDS_INFO_CONNECTIONS, rds_conn_info);

14
net/rds/ib_cm.c
View File

@ -230,7 +230,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
* the rds_ibdev at all.
*/
rds_ibdev = ib_get_client_data(dev, &rds_ib_client);
if (rds_ibdev == NULL) {
if (!rds_ibdev) {
if (printk_ratelimit())
printk(KERN_NOTICE "RDS/IB: No client_data for device %s\n",
dev->name);
@ -306,7 +306,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
ic->i_send_ring.w_nr *
sizeof(struct rds_header),
&ic->i_send_hdrs_dma, GFP_KERNEL);
if (ic->i_send_hdrs == NULL) {
if (!ic->i_send_hdrs) {
ret = -ENOMEM;
rdsdebug("ib_dma_alloc_coherent send failed\n");
goto out;
@ -316,7 +316,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
ic->i_recv_ring.w_nr *
sizeof(struct rds_header),
&ic->i_recv_hdrs_dma, GFP_KERNEL);
if (ic->i_recv_hdrs == NULL) {
if (!ic->i_recv_hdrs) {
ret = -ENOMEM;
rdsdebug("ib_dma_alloc_coherent recv failed\n");
goto out;
@ -324,14 +324,14 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
ic->i_ack = ib_dma_alloc_coherent(dev, sizeof(struct rds_header),
&ic->i_ack_dma, GFP_KERNEL);
if (ic->i_ack == NULL) {
if (!ic->i_ack) {
ret = -ENOMEM;
rdsdebug("ib_dma_alloc_coherent ack failed\n");
goto out;
}
ic->i_sends = vmalloc(ic->i_send_ring.w_nr * sizeof(struct rds_ib_send_work));
if (ic->i_sends == NULL) {
if (!ic->i_sends) {
ret = -ENOMEM;
rdsdebug("send allocation failed\n");
goto out;
@ -339,7 +339,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
memset(ic->i_sends, 0, ic->i_send_ring.w_nr * sizeof(struct rds_ib_send_work));
ic->i_recvs = vmalloc(ic->i_recv_ring.w_nr * sizeof(struct rds_ib_recv_work));
if (ic->i_recvs == NULL) {
if (!ic->i_recvs) {
ret = -ENOMEM;
rdsdebug("recv allocation failed\n");
goto out;
@ -693,7 +693,7 @@ int rds_ib_conn_alloc(struct rds_connection *conn, gfp_t gfp)
/* XXX too lazy? */
ic = kzalloc(sizeof(struct rds_ib_connection), GFP_KERNEL);
if (ic == NULL)
if (!ic)
return -ENOMEM;
INIT_LIST_HEAD(&ic->ib_node);

20
net/rds/ib_recv.c
View File

@ -53,7 +53,7 @@ static void rds_ib_frag_drop_page(struct rds_page_frag *frag)
static void rds_ib_frag_free(struct rds_page_frag *frag)
{
rdsdebug("frag %p page %p\n", frag, frag->f_page);
BUG_ON(frag->f_page != NULL);
BUG_ON(frag->f_page);
kmem_cache_free(rds_ib_frag_slab, frag);
}
@ -143,14 +143,14 @@ static int rds_ib_recv_refill_one(struct rds_connection *conn,
struct ib_sge *sge;
int ret = -ENOMEM;
if (recv->r_ibinc == NULL) {
if (!recv->r_ibinc) {
if (!atomic_add_unless(&rds_ib_allocation, 1, rds_ib_sysctl_max_recv_allocation)) {
rds_ib_stats_inc(s_ib_rx_alloc_limit);
goto out;
}
recv->r_ibinc = kmem_cache_alloc(rds_ib_incoming_slab,
kptr_gfp);
if (recv->r_ibinc == NULL) {
if (!recv->r_ibinc) {
atomic_dec(&rds_ib_allocation);
goto out;
}
@ -158,17 +158,17 @@ static int rds_ib_recv_refill_one(struct rds_connection *conn,
rds_inc_init(&recv->r_ibinc->ii_inc, conn, conn->c_faddr);
}
if (recv->r_frag == NULL) {
if (!recv->r_frag) {
recv->r_frag = kmem_cache_alloc(rds_ib_frag_slab, kptr_gfp);
if (recv->r_frag == NULL)
if (!recv->r_frag)
goto out;
INIT_LIST_HEAD(&recv->r_frag->f_item);
recv->r_frag->f_page = NULL;
}
if (ic->i_frag.f_page == NULL) {
if (!ic->i_frag.f_page) {
ic->i_frag.f_page = alloc_page(page_gfp);
if (ic->i_frag.f_page == NULL)
if (!ic->i_frag.f_page)
goto out;
ic->i_frag.f_offset = 0;
}
@ -757,7 +757,7 @@ static void rds_ib_process_recv(struct rds_connection *conn,
* into the inc and save the inc so we can hang upcoming fragments
* off its list.
*/
if (ibinc == NULL) {
if (!ibinc) {
ibinc = recv->r_ibinc;
recv->r_ibinc = NULL;
ic->i_ibinc = ibinc;
@ -940,13 +940,13 @@ int __init rds_ib_recv_init(void)
rds_ib_incoming_slab = kmem_cache_create("rds_ib_incoming",
sizeof(struct rds_ib_incoming),
0, 0, NULL);
if (rds_ib_incoming_slab == NULL)
if (!rds_ib_incoming_slab)
goto out;
rds_ib_frag_slab = kmem_cache_create("rds_ib_frag",
sizeof(struct rds_page_frag),
0, 0, NULL);
if (rds_ib_frag_slab == NULL)
if (!rds_ib_frag_slab)
kmem_cache_destroy(rds_ib_incoming_slab);
else
ret = 0;

4
net/rds/ib_send.c
View File

@ -86,7 +86,7 @@ static void rds_ib_send_unmap_rm(struct rds_ib_connection *ic,
rm->m_sg, rm->m_nents,
DMA_TO_DEVICE);
if (rm->m_rdma_op != NULL) {
if (rm->m_rdma_op) {
rds_ib_send_unmap_rdma(ic, rm->m_rdma_op);
/* If the user asked for a completion notification on this
@ -525,7 +525,7 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm,
}
/* map the message the first time we see it */
if (ic->i_rm == NULL) {
if (!ic->i_rm) {
/*
printk(KERN_NOTICE "rds_ib_xmit prep msg dport=%u flags=0x%x len=%d\n",
be16_to_cpu(rm->m_inc.i_hdr.h_dport),

2
net/rds/ib_sysctl.c
View File

@ -135,7 +135,7 @@ void rds_ib_sysctl_exit(void)
int __init rds_ib_sysctl_init(void)
{
rds_ib_sysctl_hdr = register_sysctl_paths(rds_ib_sysctl_path, rds_ib_sysctl_table);
if (rds_ib_sysctl_hdr == NULL)
if (!rds_ib_sysctl_hdr)
return -ENOMEM;
return 0;
}

12
net/rds/info.c
View File

@ -76,7 +76,7 @@ void rds_info_register_func(int optname, rds_info_func func)
BUG_ON(optname < RDS_INFO_FIRST || optname > RDS_INFO_LAST);
spin_lock(&rds_info_lock);
BUG_ON(rds_info_funcs[offset] != NULL);
BUG_ON(rds_info_funcs[offset]);
rds_info_funcs[offset] = func;
spin_unlock(&rds_info_lock);
}
@ -102,7 +102,7 @@ EXPORT_SYMBOL_GPL(rds_info_deregister_func);
*/
void rds_info_iter_unmap(struct rds_info_iterator *iter)
{
if (iter->addr != NULL) {
if (iter->addr) {
kunmap_atomic(iter->addr, KM_USER0);
iter->addr = NULL;
}
@ -117,7 +117,7 @@ void rds_info_copy(struct rds_info_iterator *iter, void *data,
unsigned long this;
while (bytes) {
if (iter->addr == NULL)
if (!iter->addr)
iter->addr = kmap_atomic(*iter->pages, KM_USER0);
this = min(bytes, PAGE_SIZE - iter->offset);
@ -188,7 +188,7 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
>> PAGE_SHIFT;
pages = kmalloc(nr_pages * sizeof(struct page *), GFP_KERNEL);
if (pages == NULL) {
if (!pages) {
ret = -ENOMEM;
goto out;
}
@ -206,7 +206,7 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
call_func:
func = rds_info_funcs[optname - RDS_INFO_FIRST];
if (func == NULL) {
if (!func) {
ret = -ENOPROTOOPT;
goto out;
}
@ -234,7 +234,7 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval,
ret = -EFAULT;
out:
for (i = 0; pages != NULL && i < nr_pages; i++)
for (i = 0; pages && i < nr_pages; i++)
put_page(pages[i]);
kfree(pages);

14
net/rds/iw_cm.c
View File

@ -257,7 +257,7 @@ static int rds_iw_setup_qp(struct rds_connection *conn)
* the rds_iwdev at all.
*/
rds_iwdev = ib_get_client_data(dev, &rds_iw_client);
if (rds_iwdev == NULL) {
if (!rds_iwdev) {
if (printk_ratelimit())
printk(KERN_NOTICE "RDS/IW: No client_data for device %s\n",
dev->name);
@ -292,7 +292,7 @@ static int rds_iw_setup_qp(struct rds_connection *conn)
ic->i_send_ring.w_nr *
sizeof(struct rds_header),
&ic->i_send_hdrs_dma, GFP_KERNEL);
if (ic->i_send_hdrs == NULL) {
if (!ic->i_send_hdrs) {
ret = -ENOMEM;
rdsdebug("ib_dma_alloc_coherent send failed\n");
goto out;
@ -302,7 +302,7 @@ static int rds_iw_setup_qp(struct rds_connection *conn)
ic->i_recv_ring.w_nr *
sizeof(struct rds_header),
&ic->i_recv_hdrs_dma, GFP_KERNEL);
if (ic->i_recv_hdrs == NULL) {
if (!ic->i_recv_hdrs) {
ret = -ENOMEM;
rdsdebug("ib_dma_alloc_coherent recv failed\n");
goto out;
@ -310,14 +310,14 @@ static int rds_iw_setup_qp(struct rds_connection *conn)
ic->i_ack = ib_dma_alloc_coherent(dev, sizeof(struct rds_header),
&ic->i_ack_dma, GFP_KERNEL);
if (ic->i_ack == NULL) {
if (!ic->i_ack) {
ret = -ENOMEM;
rdsdebug("ib_dma_alloc_coherent ack failed\n");
goto out;
}
ic->i_sends = vmalloc(ic->i_send_ring.w_nr * sizeof(struct rds_iw_send_work));
if (ic->i_sends == NULL) {
if (!ic->i_sends) {
ret = -ENOMEM;
rdsdebug("send allocation failed\n");
goto out;
@ -325,7 +325,7 @@ static int rds_iw_setup_qp(struct rds_connection *conn)
rds_iw_send_init_ring(ic);
ic->i_recvs = vmalloc(ic->i_recv_ring.w_nr * sizeof(struct rds_iw_recv_work));
if (ic->i_recvs == NULL) {
if (!ic->i_recvs) {
ret = -ENOMEM;
rdsdebug("recv allocation failed\n");
goto out;
@ -696,7 +696,7 @@ int rds_iw_conn_alloc(struct rds_connection *conn, gfp_t gfp)
/* XXX too lazy? */
ic = kzalloc(sizeof(struct rds_iw_connection), GFP_KERNEL);
if (ic == NULL)
if (!ic)
return -ENOMEM;
INIT_LIST_HEAD(&ic->iw_node);

20
net/rds/iw_recv.c
View File

@ -53,7 +53,7 @@ static void rds_iw_frag_drop_page(struct rds_page_frag *frag)
static void rds_iw_frag_free(struct rds_page_frag *frag)
{
rdsdebug("frag %p page %p\n", frag, frag->f_page);
BUG_ON(frag->f_page != NULL);
BUG_ON(frag->f_page);
kmem_cache_free(rds_iw_frag_slab, frag);
}
@ -143,14 +143,14 @@ static int rds_iw_recv_refill_one(struct rds_connection *conn,
struct ib_sge *sge;
int ret = -ENOMEM;
if (recv->r_iwinc == NULL) {
if (!recv->r_iwinc) {
if (!atomic_add_unless(&rds_iw_allocation, 1, rds_iw_sysctl_max_recv_allocation)) {
rds_iw_stats_inc(s_iw_rx_alloc_limit);
goto out;
}
recv->r_iwinc = kmem_cache_alloc(rds_iw_incoming_slab,
kptr_gfp);
if (recv->r_iwinc == NULL) {
if (!recv->r_iwinc) {
atomic_dec(&rds_iw_allocation);
goto out;
}
@ -158,17 +158,17 @@ static int rds_iw_recv_refill_one(struct rds_connection *conn,
rds_inc_init(&recv->r_iwinc->ii_inc, conn, conn->c_faddr);
}
if (recv->r_frag == NULL) {
if (!recv->r_frag) {
recv->r_frag = kmem_cache_alloc(rds_iw_frag_slab, kptr_gfp);
if (recv->r_frag == NULL)
if (!recv->r_frag)
goto out;
INIT_LIST_HEAD(&recv->r_frag->f_item);
recv->r_frag->f_page = NULL;
}
if (ic->i_frag.f_page == NULL) {
if (!ic->i_frag.f_page) {
ic->i_frag.f_page = alloc_page(page_gfp);
if (ic->i_frag.f_page == NULL)
if (!ic->i_frag.f_page)
goto out;
ic->i_frag.f_offset = 0;
}
@ -716,7 +716,7 @@ static void rds_iw_process_recv(struct rds_connection *conn,
* into the inc and save the inc so we can hang upcoming fragments
* off its list.
*/
if (iwinc == NULL) {
if (!iwinc) {
iwinc = recv->r_iwinc;
recv->r_iwinc = NULL;
ic->i_iwinc = iwinc;
@ -899,13 +899,13 @@ int __init rds_iw_recv_init(void)
rds_iw_incoming_slab = kmem_cache_create("rds_iw_incoming",
sizeof(struct rds_iw_incoming),
0, 0, NULL);
if (rds_iw_incoming_slab == NULL)
if (!rds_iw_incoming_slab)
goto out;
rds_iw_frag_slab = kmem_cache_create("rds_iw_frag",
sizeof(struct rds_page_frag),
0, 0, NULL);
if (rds_iw_frag_slab == NULL)
if (!rds_iw_frag_slab)
kmem_cache_destroy(rds_iw_incoming_slab);
else
ret = 0;

4
net/rds/iw_send.c
View File

@ -86,7 +86,7 @@ static void rds_iw_send_unmap_rm(struct rds_iw_connection *ic,
rm->m_sg, rm->m_nents,
DMA_TO_DEVICE);
if (rm->m_rdma_op != NULL) {
if (rm->m_rdma_op) {
rds_iw_send_unmap_rdma(ic, rm->m_rdma_op);
/* If the user asked for a completion notification on this
@ -556,7 +556,7 @@ int rds_iw_xmit(struct rds_connection *conn, struct rds_message *rm,
}
/* map the message the first time we see it */
if (ic->i_rm == NULL) {
if (!ic->i_rm) {
/*
printk(KERN_NOTICE "rds_iw_xmit prep msg dport=%u flags=0x%x len=%d\n",
be16_to_cpu(rm->m_inc.i_hdr.h_dport),

2
net/rds/iw_sysctl.c
View File

@ -125,7 +125,7 @@ void rds_iw_sysctl_exit(void)
int __init rds_iw_sysctl_init(void)
{
rds_iw_sysctl_hdr = register_sysctl_paths(rds_iw_sysctl_path, rds_iw_sysctl_table);
if (rds_iw_sysctl_hdr == NULL)
if (!rds_iw_sysctl_hdr)
return -ENOMEM;
return 0;
}

2
net/rds/loop.c
View File

@ -112,7 +112,7 @@ static int rds_loop_conn_alloc(struct rds_connection *conn, gfp_t gfp)
unsigned long flags;
lc = kzalloc(sizeof(struct rds_loop_connection), GFP_KERNEL);
if (lc == NULL)
if (!lc)
return -ENOMEM;
INIT_LIST_HEAD(&lc->loop_node);

4
net/rds/message.c
View File

@ -240,7 +240,7 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in
unsigned int i;
rm = rds_message_alloc(ceil(total_len, PAGE_SIZE), GFP_KERNEL);
if (rm == NULL)
if (!rm)
return ERR_PTR(-ENOMEM);
set_bit(RDS_MSG_PAGEVEC, &rm->m_flags);
@ -284,7 +284,7 @@ struct rds_message *rds_message_copy_from_user(struct iovec *first_iov,
sg_off = 0; /* Dear gcc, sg->page will be null from kzalloc. */
while (total_len) {
if (sg_page(sg) == NULL) {
if (!sg_page(sg)) {
ret = rds_page_remainder_alloc(sg, total_len,
GFP_HIGHUSER);
if (ret)

4
net/rds/page.c
View File

@ -116,7 +116,7 @@ int rds_page_remainder_alloc(struct scatterlist *scat, unsigned long bytes,
/* jump straight to allocation if we're trying for a huge page */
if (bytes >= PAGE_SIZE) {
page = alloc_page(gfp);
if (page == NULL) {
if (!page) {
ret = -ENOMEM;
} else {
sg_set_page(scat, page, PAGE_SIZE, 0);
@ -162,7 +162,7 @@ int rds_page_remainder_alloc(struct scatterlist *scat, unsigned long bytes,
rem = &per_cpu(rds_page_remainders, get_cpu());
local_irq_save(flags);
if (page == NULL) {
if (!page) {
ret = -ENOMEM;
break;
}

18
net/rds/rdma.c
View File

@ -189,7 +189,7 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
goto out;
}
if (rs->rs_transport->get_mr == NULL) {
if (!rs->rs_transport->get_mr) {
ret = -EOPNOTSUPP;
goto out;
}
@ -205,13 +205,13 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
/* XXX clamp nr_pages to limit the size of this alloc? */
pages = kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL);
if (pages == NULL) {
if (!pages) {
ret = -ENOMEM;
goto out;
}
mr = kzalloc(sizeof(struct rds_mr), GFP_KERNEL);
if (mr == NULL) {
if (!mr) {
ret = -ENOMEM;
goto out;
}
@ -244,7 +244,7 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
nents = ret;
sg = kcalloc(nents, sizeof(*sg), GFP_KERNEL);
if (sg == NULL) {
if (!sg) {
ret = -ENOMEM;
goto out;
}
@ -425,7 +425,7 @@ void rds_rdma_unuse(struct rds_sock *rs, u32 r_key, int force)
/* May have to issue a dma_sync on this memory region.
* Note we could avoid this if the operation was a RDMA READ,
* but at this point we can't tell. */
if (mr != NULL) {
if (mr) {
if (mr->r_trans->sync_mr)
mr->r_trans->sync_mr(mr->r_trans_private, DMA_FROM_DEVICE);
@ -511,13 +511,13 @@ static struct rds_rdma_op *rds_rdma_prepare(struct rds_sock *rs,
}
pages = kcalloc(max_pages, sizeof(struct page *), GFP_KERNEL);
if (pages == NULL) {
if (!pages) {
ret = -ENOMEM;
goto out;
}
op = kzalloc(offsetof(struct rds_rdma_op, r_sg[nr_pages]), GFP_KERNEL);
if (op == NULL) {
if (!op) {
ret = -ENOMEM;
goto out;
}
@ -643,7 +643,7 @@ int rds_cmsg_rdma_args(struct rds_sock *rs, struct rds_message *rm,
struct rds_rdma_op *op;
if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct rds_rdma_args)) ||
rm->m_rdma_op != NULL)
rm->m_rdma_op)
return -EINVAL;
op = rds_rdma_prepare(rs, CMSG_DATA(cmsg));
@ -681,7 +681,7 @@ int rds_cmsg_rdma_dest(struct rds_sock *rs, struct rds_message *rm,
spin_lock_irqsave(&rs->rs_rdma_lock, flags);
mr = rds_mr_tree_walk(&rs->rs_rdma_keys, r_key, NULL);
if (mr == NULL)
if (!mr)
err = -EINVAL; /* invalid r_key */
else
atomic_inc(&mr->r_refcount);

4
net/rds/recv.c
View File

@ -210,7 +210,7 @@ void rds_recv_incoming(struct rds_connection *conn, __be32 saddr, __be32 daddr,
}
rs = rds_find_bound(daddr, inc->i_hdr.h_dport);
if (rs == NULL) {
if (!rs) {
rds_stats_inc(s_recv_drop_no_sock);
goto out;
}
@ -251,7 +251,7 @@ static int rds_next_incoming(struct rds_sock *rs, struct rds_incoming **inc)
{
unsigned long flags;
if (*inc == NULL) {
if (!*inc) {
read_lock_irqsave(&rs->rs_recv_lock, flags);
if (!list_empty(&rs->rs_recv_queue)) {
*inc = list_entry(rs->rs_recv_queue.next,

14
net/rds/send.c
View File

@ -164,7 +164,7 @@ int rds_send_xmit(struct rds_connection *conn)
* offset and S/G temporaries.
*/
rm = conn->c_xmit_rm;
if (rm != NULL &&
if (rm &&
conn->c_xmit_hdr_off == sizeof(struct rds_header) &&
conn->c_xmit_sg == rm->m_nents) {
conn->c_xmit_rm = NULL;
@ -180,8 +180,8 @@ int rds_send_xmit(struct rds_connection *conn)
/* If we're asked to send a cong map update, do so.
*/
if (rm == NULL && test_and_clear_bit(0, &conn->c_map_queued)) {
if (conn->c_trans->xmit_cong_map != NULL) {
if (!rm && test_and_clear_bit(0, &conn->c_map_queued)) {
if (conn->c_trans->xmit_cong_map) {
conn->c_map_offset = 0;
conn->c_map_bytes = sizeof(struct rds_header) +
RDS_CONG_MAP_BYTES;
@ -204,7 +204,7 @@ int rds_send_xmit(struct rds_connection *conn)
* the connction. We can use this ref while holding the
* send_sem.. rds_send_reset() is serialized with it.
*/
if (rm == NULL) {
if (!rm) {
unsigned int len;
spin_lock_irqsave(&conn->c_lock, flags);
@ -224,7 +224,7 @@ int rds_send_xmit(struct rds_connection *conn)
spin_unlock_irqrestore(&conn->c_lock, flags);
if (rm == NULL) {
if (!rm) {
was_empty = 1;
break;
}
@ -875,7 +875,7 @@ int rds_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
goto out;
if ((rm->m_rdma_cookie || rm->m_rdma_op) &&
conn->c_trans->xmit_rdma == NULL) {
!conn->c_trans->xmit_rdma) {
if (printk_ratelimit())
printk(KERN_NOTICE "rdma_op %p conn xmit_rdma %p\n",
rm->m_rdma_op, conn->c_trans->xmit_rdma);
@ -961,7 +961,7 @@ rds_send_pong(struct rds_connection *conn, __be16 dport)
int ret = 0;
rm = rds_message_alloc(0, GFP_ATOMIC);
if (rm == NULL) {
if (!rm) {
ret = -ENOMEM;
goto out;
}

2
net/rds/sysctl.c
View File

@ -111,7 +111,7 @@ int __init rds_sysctl_init(void)
rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
rds_sysctl_reg_table = register_sysctl_paths(rds_sysctl_path, rds_sysctl_rds_table);
if (rds_sysctl_reg_table == NULL)
if (!rds_sysctl_reg_table)
return -ENOMEM;
return 0;
}

4
net/rds/tcp.c
View File

@ -200,7 +200,7 @@ static int rds_tcp_conn_alloc(struct rds_connection *conn, gfp_t gfp)
struct rds_tcp_connection *tc;
tc = kmem_cache_alloc(rds_tcp_conn_slab, gfp);
if (tc == NULL)
if (!tc)
return -ENOMEM;
tc->t_sock = NULL;
@ -283,7 +283,7 @@ int __init rds_tcp_init(void)
rds_tcp_conn_slab = kmem_cache_create("rds_tcp_connection",
sizeof(struct rds_tcp_connection),
0, 0, NULL);
if (rds_tcp_conn_slab == NULL) {
if (!rds_tcp_conn_slab) {
ret = -ENOMEM;
goto out;
}

2
net/rds/tcp_connect.c
View File

@ -45,7 +45,7 @@ void rds_tcp_state_change(struct sock *sk)
read_lock(&sk->sk_callback_lock);
conn = sk->sk_user_data;
if (conn == NULL) {
if (!conn) {
state_change = sk->sk_state_change;
goto out;
}

4
net/rds/tcp_listen.c
View File

@ -116,7 +116,7 @@ void rds_tcp_listen_data_ready(struct sock *sk, int bytes)
read_lock(&sk->sk_callback_lock);
ready = sk->sk_user_data;
if (ready == NULL) { /* check for teardown race */
if (!ready) { /* check for teardown race */
ready = sk->sk_data_ready;
goto out;
}
@ -178,7 +178,7 @@ void rds_tcp_listen_stop(void)
struct socket *sock = rds_tcp_listen_sock;
struct sock *sk;
if (sock == NULL)
if (!sock)
return;
sk = sock->sk;

10
net/rds/tcp_recv.c
View File

@ -190,10 +190,10 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb,
* processing.
*/
while (left) {
if (tinc == NULL) {
if (!tinc) {
tinc = kmem_cache_alloc(rds_tcp_incoming_slab,
arg->gfp);
if (tinc == NULL) {
if (!tinc) {
desc->error = -ENOMEM;
goto out;
}
@ -229,7 +229,7 @@ static int rds_tcp_data_recv(read_descriptor_t *desc, struct sk_buff *skb,
if (left && tc->t_tinc_data_rem) {
clone = skb_clone(skb, arg->gfp);
if (clone == NULL) {
if (!clone) {
desc->error = -ENOMEM;
goto out;
}
@ -326,7 +326,7 @@ void rds_tcp_data_ready(struct sock *sk, int bytes)
read_lock(&sk->sk_callback_lock);
conn = sk->sk_user_data;
if (conn == NULL) { /* check for teardown race */
if (!conn) { /* check for teardown race */
ready = sk->sk_data_ready;
goto out;
}
@ -347,7 +347,7 @@ int __init rds_tcp_recv_init(void)
rds_tcp_incoming_slab = kmem_cache_create("rds_tcp_incoming",
sizeof(struct rds_tcp_incoming),
0, 0, NULL);
if (rds_tcp_incoming_slab == NULL)
if (!rds_tcp_incoming_slab)
return -ENOMEM;
return 0;
}

2
net/rds/tcp_send.c
View File

@ -226,7 +226,7 @@ void rds_tcp_write_space(struct sock *sk)
read_lock(&sk->sk_callback_lock);
conn = sk->sk_user_data;
if (conn == NULL) {
if (!conn) {
write_space = sk->sk_write_space;
goto out;
}

2
net/rds/threads.c
View File

@ -215,7 +215,7 @@ void rds_threads_exit(void)
int __init rds_threads_init(void)
{
rds_wq = create_workqueue("krdsd");
if (rds_wq == NULL)
if (!rds_wq)
return -ENOMEM;
return 0;