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OpenCloudOS-Kernel
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staging: lustre: change some LIBCFS_ALLOC calls to k?alloc(GFP_KERNEL) 

When an allocation happens from process context rather than
filesystem context, it is best to use GFP_KERNEL rather than
LIBCFS_ALLOC() which always uses GFP_NOFS.
This include initialization during, or prior to, mount,
and code run from separate worker threads.

So for some of these cases, switch to kmalloc, kvmalloc, or
kvmalloc_array() as appropriate.
In some cases we preserve __GFP_ZERO (via kzalloc/kvzalloc), but in
others it is clear that allocated memory is immediately initialized.

In each case, the matching LIBCFS_FREE() is converted to
kfree() or kvfree()

This is just a subset of locations that need changing.
As there are quite a lot, I've broken them up into several
ad-hoc sets to avoid review-fatigue.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
NeilBrown 2018-01-09 12:19:38 +11:00 committed by Greg Kroah-Hartman
parent 2aa8b1b728
commit 12e46c461c
7 changed files with 29 additions and 39 deletions
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4
drivers/staging/lustre/include/linux/libcfs/libcfs_string.h
View File

@ -85,11 +85,11 @@ static inline void
cfs_expr_list_values_free(u32 *values, int num)
{
/*
* This array is allocated by LIBCFS_ALLOC(), so it shouldn't be freed
* This array is allocated by kvalloc(), so it shouldn't be freed
* by OBD_FREE() if it's called by module other than libcfs & LNet,
* otherwise we will see fake memory leak
*/
LIBCFS_FREE(values, num * sizeof(values[0]));
kvfree(values);
}
void cfs_expr_list_free(struct cfs_expr_list *expr_list);

11
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
View File

@ -2576,11 +2576,7 @@ static void kiblnd_base_shutdown(void)
break;
}
if (kiblnd_data.kib_peers) {
LIBCFS_FREE(kiblnd_data.kib_peers,
sizeof(struct list_head) *
kiblnd_data.kib_peer_hash_size);
}
kvfree(kiblnd_data.kib_peers);
if (kiblnd_data.kib_scheds)
cfs_percpt_free(kiblnd_data.kib_scheds);
@ -2672,8 +2668,9 @@ static int kiblnd_base_startup(void)
INIT_LIST_HEAD(&kiblnd_data.kib_failed_devs);
kiblnd_data.kib_peer_hash_size = IBLND_PEER_HASH_SIZE;
LIBCFS_ALLOC(kiblnd_data.kib_peers,
sizeof(struct list_head) * kiblnd_data.kib_peer_hash_size);
kiblnd_data.kib_peers = kvmalloc_array(kiblnd_data.kib_peer_hash_size,
sizeof(struct list_head),
GFP_KERNEL);
if (!kiblnd_data.kib_peers)
goto failed;
for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++)

22
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c
View File

@ -1070,8 +1070,9 @@ ksocknal_create_conn(struct lnet_ni *ni, struct ksock_route *route,
conn->ksnc_tx_carrier = NULL;
atomic_set(&conn->ksnc_tx_nob, 0);
LIBCFS_ALLOC(hello, offsetof(struct ksock_hello_msg,
kshm_ips[LNET_MAX_INTERFACES]));
hello = kvzalloc(offsetof(struct ksock_hello_msg,
kshm_ips[LNET_MAX_INTERFACES]),
GFP_KERNEL);
if (!hello) {
rc = -ENOMEM;
goto failed_1;
@ -1334,8 +1335,7 @@ ksocknal_create_conn(struct lnet_ni *ni, struct ksock_route *route,
rc = ksocknal_send_hello(ni, conn, peerid.nid, hello);
}
LIBCFS_FREE(hello, offsetof(struct ksock_hello_msg,
kshm_ips[LNET_MAX_INTERFACES]));
kvfree(hello);
/*
* setup the socket AFTER I've received hello (it disables
@ -1415,9 +1415,7 @@ ksocknal_create_conn(struct lnet_ni *ni, struct ksock_route *route,
ksocknal_peer_decref(peer);
failed_1:
if (hello)
LIBCFS_FREE(hello, offsetof(struct ksock_hello_msg,
kshm_ips[LNET_MAX_INTERFACES]));
kvfree(hello);
kfree(conn);
@ -2269,9 +2267,7 @@ ksocknal_free_buffers(void)
cfs_percpt_free(ksocknal_data.ksnd_sched_info);
}
LIBCFS_FREE(ksocknal_data.ksnd_peers,
sizeof(struct list_head) *
ksocknal_data.ksnd_peer_hash_size);
kvfree(ksocknal_data.ksnd_peers);
spin_lock(&ksocknal_data.ksnd_tx_lock);
@ -2401,9 +2397,9 @@ ksocknal_base_startup(void)
memset(&ksocknal_data, 0, sizeof(ksocknal_data)); /* zero pointers */
ksocknal_data.ksnd_peer_hash_size = SOCKNAL_PEER_HASH_SIZE;
LIBCFS_ALLOC(ksocknal_data.ksnd_peers,
sizeof(struct list_head) *
ksocknal_data.ksnd_peer_hash_size);
ksocknal_data.ksnd_peers = kvmalloc_array(ksocknal_data.ksnd_peer_hash_size,
sizeof(struct list_head),
GFP_KERNEL);
if (!ksocknal_data.ksnd_peers)
return -ENOMEM;

18
drivers/staging/lustre/lnet/libcfs/hash.c
View File

@ -864,12 +864,10 @@ cfs_hash_buckets_free(struct cfs_hash_bucket **buckets,
{
int i;
for (i = prev_size; i < size; i++) {
if (buckets[i])
LIBCFS_FREE(buckets[i], bkt_size);
}
for (i = prev_size; i < size; i++)
kfree(buckets[i]);
LIBCFS_FREE(buckets, sizeof(buckets[0]) * size);
kvfree(buckets);
}
/*
@ -889,7 +887,7 @@ cfs_hash_buckets_realloc(struct cfs_hash *hs, struct cfs_hash_bucket **old_bkts,
if (old_bkts && old_size == new_size)
return old_bkts;
LIBCFS_ALLOC(new_bkts, sizeof(new_bkts[0]) * new_size);
new_bkts = kvmalloc_array(new_size, sizeof(new_bkts[0]), GFP_KERNEL);
if (!new_bkts)
return NULL;
@ -902,7 +900,7 @@ cfs_hash_buckets_realloc(struct cfs_hash *hs, struct cfs_hash_bucket **old_bkts,
struct hlist_head *hhead;
struct cfs_hash_bd bd;
LIBCFS_ALLOC(new_bkts[i], cfs_hash_bkt_size(hs));
new_bkts[i] = kzalloc(cfs_hash_bkt_size(hs), GFP_KERNEL);
if (!new_bkts[i]) {
cfs_hash_buckets_free(new_bkts, cfs_hash_bkt_size(hs),
old_size, new_size);
@ -1014,7 +1012,7 @@ cfs_hash_create(char *name, unsigned int cur_bits, unsigned int max_bits,
len = !(flags & CFS_HASH_BIGNAME) ?
CFS_HASH_NAME_LEN : CFS_HASH_BIGNAME_LEN;
LIBCFS_ALLOC(hs, offsetof(struct cfs_hash, hs_name[len]));
hs = kzalloc(offsetof(struct cfs_hash, hs_name[len]), GFP_KERNEL);
if (!hs)
return NULL;
@ -1046,7 +1044,7 @@ cfs_hash_create(char *name, unsigned int cur_bits, unsigned int max_bits,
if (hs->hs_buckets)
return hs;
LIBCFS_FREE(hs, offsetof(struct cfs_hash, hs_name[len]));
kfree(hs);
return NULL;
}
EXPORT_SYMBOL(cfs_hash_create);
@ -1109,7 +1107,7 @@ cfs_hash_destroy(struct cfs_hash *hs)
0, CFS_HASH_NBKT(hs));
i = cfs_hash_with_bigname(hs) ?
CFS_HASH_BIGNAME_LEN : CFS_HASH_NAME_LEN;
LIBCFS_FREE(hs, offsetof(struct cfs_hash, hs_name[i]));
kfree(hs);
}
struct cfs_hash *cfs_hash_getref(struct cfs_hash *hs)

9
drivers/staging/lustre/lnet/libcfs/libcfs_mem.c
View File

@ -130,10 +130,9 @@ cfs_array_free(void *vars)
if (!arr->va_ptrs[i])
continue;
LIBCFS_FREE(arr->va_ptrs[i], arr->va_size);
kvfree(arr->va_ptrs[i]);
}
LIBCFS_FREE(arr, offsetof(struct cfs_var_array,
va_ptrs[arr->va_count]));
kvfree(arr);
}
EXPORT_SYMBOL(cfs_array_free);
@ -148,7 +147,7 @@ cfs_array_alloc(int count, unsigned int size)
struct cfs_var_array *arr;
int i;
LIBCFS_ALLOC(arr, offsetof(struct cfs_var_array, va_ptrs[count]));
arr = kvmalloc(offsetof(struct cfs_var_array, va_ptrs[count]), GFP_KERNEL);
if (!arr)
return NULL;
@ -156,7 +155,7 @@ cfs_array_alloc(int count, unsigned int size)
arr->va_size = size;
for (i = 0; i < count; i++) {
LIBCFS_ALLOC(arr->va_ptrs[i], size);
arr->va_ptrs[i] = kvzalloc(size, GFP_KERNEL);
if (!arr->va_ptrs[i]) {
cfs_array_free((void *)&arr->va_ptrs[0]);

2
drivers/staging/lustre/lnet/libcfs/libcfs_string.c
View File

@ -437,7 +437,7 @@ cfs_expr_list_values(struct cfs_expr_list *expr_list, int max, u32 **valpp)
return -EINVAL;
}
LIBCFS_ALLOC(val, sizeof(val[0]) * count);
val = kvmalloc_array(count, sizeof(val[0]), GFP_KERNEL | __GFP_ZERO);
if (!val)
return -ENOMEM;

2
drivers/staging/lustre/lnet/lnet/config.c
View File

@ -169,7 +169,7 @@ lnet_ni_alloc(__u32 net, struct cfs_expr_list *el, struct list_head *nilist)
LASSERT(rc <= LNET_CPT_NUMBER);
if (rc == LNET_CPT_NUMBER) {
LIBCFS_FREE(ni->ni_cpts, rc * sizeof(ni->ni_cpts[0]));
cfs_expr_list_values_free(ni->ni_cpts, LNET_CPT_NUMBER);
ni->ni_cpts = NULL;
}