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Message-ID: <151909341794.25814.12112685405079106591.stgit@noble>
Date: Tue, 20 Feb 2018 13:23:37 +1100
From: NeilBrown <neilb@...e.com>
To: Oleg Drokin <oleg.drokin@...el.com>,
James Simmons <jsimmons@...radead.org>,
Andreas Dilger <andreas.dilger@...el.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: lkml <linux-kernel@...r.kernel.org>,
lustre <lustre-devel@...ts.lustre.org>
Subject: [PATCH 12/21] staging: lustre: discard libcfs_kvzalloc and
linux-mem.c
The only interesting difference between libcfs_kvzalloc()
and kvzalloc() is that the former appears to work
with GFP_NOFS, which the latter gives a WARN_ON_ONCE()
when that is attempted.
Each libcfs_kvzalloc() should really be analysed
and either converted to a kzalloc() call if the size is never
more than a page, or to use GFP_KERNEL if no locks are held.
If there is ever a case where locks are held and a large allocation
is needed, then some other technique should be used.
It might be nice to not always blindly zero pages too...
For now, just convert libcfs_kvzalloc() calls to
kvzalloc(), and let the warning remind us that there is work to do.
Signed-off-by: NeilBrown <neilb@...e.com>
---
.../staging/lustre/include/linux/libcfs/libcfs.h | 2 -
drivers/staging/lustre/lnet/libcfs/Makefile | 1
.../staging/lustre/lnet/libcfs/linux/linux-mem.c | 44 --------------------
drivers/staging/lustre/lustre/llite/file.c | 2 -
drivers/staging/lustre/lustre/lmv/lmv_obd.c | 4 +-
drivers/staging/lustre/lustre/lov/lov_ea.c | 2 -
drivers/staging/lustre/lustre/lov/lov_io.c | 2 -
drivers/staging/lustre/lustre/lov/lov_lock.c | 2 -
drivers/staging/lustre/lustre/lov/lov_object.c | 4 +-
drivers/staging/lustre/lustre/lov/lov_pack.c | 2 -
drivers/staging/lustre/lustre/mdc/mdc_locks.c | 2 -
.../lustre/lustre/obdclass/linux/linux-module.c | 2 -
drivers/staging/lustre/lustre/obdclass/llog.c | 4 +-
.../lustre/lustre/obdclass/lustre_handles.c | 2 -
drivers/staging/lustre/lustre/ptlrpc/client.c | 2 -
drivers/staging/lustre/lustre/ptlrpc/sec.c | 4 +-
drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c | 2 -
drivers/staging/lustre/lustre/ptlrpc/sec_null.c | 8 ++--
drivers/staging/lustre/lustre/ptlrpc/sec_plain.c | 8 ++--
drivers/staging/lustre/lustre/ptlrpc/service.c | 4 +-
20 files changed, 28 insertions(+), 75 deletions(-)
delete mode 100644 drivers/staging/lustre/lnet/libcfs/linux/linux-mem.c
diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
index 039205763021..392793582956 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
@@ -112,8 +112,6 @@ static inline void *__container_of(void *ptr, unsigned long shift)
#define _LIBCFS_H
-void *libcfs_kvzalloc(size_t size, gfp_t flags);
-
extern struct miscdevice libcfs_dev;
/**
* The path of debug log dump upcall script.
diff --git a/drivers/staging/lustre/lnet/libcfs/Makefile b/drivers/staging/lustre/lnet/libcfs/Makefile
index a51a8b0b9921..b7dc7ac11cc5 100644
--- a/drivers/staging/lustre/lnet/libcfs/Makefile
+++ b/drivers/staging/lustre/lnet/libcfs/Makefile
@@ -9,7 +9,6 @@ libcfs-linux-objs += linux-cpu.o
libcfs-linux-objs += linux-module.o
libcfs-linux-objs += linux-crypto.o
libcfs-linux-objs += linux-crypto-adler.o
-libcfs-linux-objs += linux-mem.o
libcfs-linux-objs := $(addprefix linux/,$(libcfs-linux-objs))
diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-mem.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-mem.c
deleted file mode 100644
index f2c001bac303..000000000000
--- a/drivers/staging/lustre/lnet/libcfs/linux/linux-mem.c
+++ /dev/null
@@ -1,44 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.gnu.org/licenses/gpl-2.0.html
- *
- */
-/*
- * This file creates a memory allocation primitive for Lustre, that
- * allows to fallback to vmalloc allocations should regular kernel allocations
- * fail due to size or system memory fragmentation.
- *
- * Author: Oleg Drokin <green@...uxhacker.ru>
- *
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Seagate Technology.
- */
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-#include <linux/libcfs/libcfs.h>
-
-void *libcfs_kvzalloc(size_t size, gfp_t flags)
-{
- void *ret;
-
- ret = kzalloc(size, flags | __GFP_NOWARN);
- if (!ret)
- ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL);
- return ret;
-}
-EXPORT_SYMBOL(libcfs_kvzalloc);
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index 002a56793e89..ca5faea13b7e 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -3361,7 +3361,7 @@ static int ll_layout_fetch(struct inode *inode, struct ldlm_lock *lock)
goto out;
}
- lvbdata = libcfs_kvzalloc(lmmsize, GFP_NOFS);
+ lvbdata = kvzalloc(lmmsize, GFP_NOFS);
if (!lvbdata) {
rc = -ENOMEM;
goto out;
diff --git a/drivers/staging/lustre/lustre/lmv/lmv_obd.c b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
index c2c57f65431e..179651531862 100644
--- a/drivers/staging/lustre/lustre/lmv/lmv_obd.c
+++ b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
@@ -1035,7 +1035,7 @@ static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
reqlen = offsetof(typeof(*hur),
hur_user_item[nr])
+ hur->hur_request.hr_data_len;
- req = libcfs_kvzalloc(reqlen, GFP_NOFS);
+ req = kvzalloc(reqlen, GFP_NOFS);
if (!req)
return -ENOMEM;
@@ -2733,7 +2733,7 @@ static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp,
lsm_size = lmv_stripe_md_size(0);
if (!lsm) {
- lsm = libcfs_kvzalloc(lsm_size, GFP_NOFS);
+ lsm = kvzalloc(lsm_size, GFP_NOFS);
if (!lsm)
return -ENOMEM;
allocated = true;
diff --git a/drivers/staging/lustre/lustre/lov/lov_ea.c b/drivers/staging/lustre/lustre/lov/lov_ea.c
index d563dd73343a..c56a971745e8 100644
--- a/drivers/staging/lustre/lustre/lov/lov_ea.c
+++ b/drivers/staging/lustre/lustre/lov/lov_ea.c
@@ -89,7 +89,7 @@ struct lov_stripe_md *lsm_alloc_plain(u16 stripe_count)
oinfo_ptrs_size = sizeof(struct lov_oinfo *) * stripe_count;
lsm_size = sizeof(*lsm) + oinfo_ptrs_size;
- lsm = libcfs_kvzalloc(lsm_size, GFP_NOFS);
+ lsm = kvzalloc(lsm_size, GFP_NOFS);
if (!lsm)
return NULL;
diff --git a/drivers/staging/lustre/lustre/lov/lov_io.c b/drivers/staging/lustre/lustre/lov/lov_io.c
index c5f5d1b106dc..c0dbf6cd53b4 100644
--- a/drivers/staging/lustre/lustre/lov/lov_io.c
+++ b/drivers/staging/lustre/lustre/lov/lov_io.c
@@ -243,7 +243,7 @@ static int lov_io_subio_init(const struct lu_env *env, struct lov_io *lio,
* when writing a page. -jay
*/
lio->lis_subs =
- libcfs_kvzalloc(lsm->lsm_stripe_count *
+ kvzalloc(lsm->lsm_stripe_count *
sizeof(lio->lis_subs[0]),
GFP_NOFS);
if (lio->lis_subs) {
diff --git a/drivers/staging/lustre/lustre/lov/lov_lock.c b/drivers/staging/lustre/lustre/lov/lov_lock.c
index 2fcdeb707ff9..b0292100bf26 100644
--- a/drivers/staging/lustre/lustre/lov/lov_lock.c
+++ b/drivers/staging/lustre/lustre/lov/lov_lock.c
@@ -145,7 +145,7 @@ static struct lov_lock *lov_lock_sub_init(const struct lu_env *env,
nr++;
}
LASSERT(nr > 0);
- lovlck = libcfs_kvzalloc(offsetof(struct lov_lock, lls_sub[nr]),
+ lovlck = kvzalloc(offsetof(struct lov_lock, lls_sub[nr]),
GFP_NOFS);
if (!lovlck)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/staging/lustre/lustre/lov/lov_object.c b/drivers/staging/lustre/lustre/lov/lov_object.c
index 86cd4f9fbd0c..16cf9d584bbc 100644
--- a/drivers/staging/lustre/lustre/lov/lov_object.c
+++ b/drivers/staging/lustre/lustre/lov/lov_object.c
@@ -242,7 +242,7 @@ static int lov_init_raid0(const struct lu_env *env, struct lov_device *dev,
r0->lo_nr = lsm->lsm_stripe_count;
LASSERT(r0->lo_nr <= lov_targets_nr(dev));
- r0->lo_sub = libcfs_kvzalloc(r0->lo_nr * sizeof(r0->lo_sub[0]),
+ r0->lo_sub = kvzalloc(r0->lo_nr * sizeof(r0->lo_sub[0]),
GFP_NOFS);
if (r0->lo_sub) {
int psz = 0;
@@ -1375,7 +1375,7 @@ static int lov_object_fiemap(const struct lu_env *env, struct cl_object *obj,
if (fiemap_count_to_size(fiemap->fm_extent_count) < buffer_size)
buffer_size = fiemap_count_to_size(fiemap->fm_extent_count);
- fm_local = libcfs_kvzalloc(buffer_size, GFP_NOFS);
+ fm_local = kvzalloc(buffer_size, GFP_NOFS);
if (!fm_local) {
rc = -ENOMEM;
goto out;
diff --git a/drivers/staging/lustre/lustre/lov/lov_pack.c b/drivers/staging/lustre/lustre/lov/lov_pack.c
index e5b11c4085a9..b1060d02a164 100644
--- a/drivers/staging/lustre/lustre/lov/lov_pack.c
+++ b/drivers/staging/lustre/lustre/lov/lov_pack.c
@@ -333,7 +333,7 @@ int lov_getstripe(struct lov_object *obj, struct lov_stripe_md *lsm,
lmmk_size = lov_mds_md_size(stripe_count, lsm->lsm_magic);
- lmmk = libcfs_kvzalloc(lmmk_size, GFP_NOFS);
+ lmmk = kvzalloc(lmmk_size, GFP_NOFS);
if (!lmmk) {
rc = -ENOMEM;
goto out;
diff --git a/drivers/staging/lustre/lustre/mdc/mdc_locks.c b/drivers/staging/lustre/lustre/mdc/mdc_locks.c
index 3114907ac5ff..695ef44532cf 100644
--- a/drivers/staging/lustre/lustre/mdc/mdc_locks.c
+++ b/drivers/staging/lustre/lustre/mdc/mdc_locks.c
@@ -660,7 +660,7 @@ static int mdc_finish_enqueue(struct obd_export *exp,
LDLM_DEBUG(lock, "layout lock returned by: %s, lvb_len: %d",
ldlm_it2str(it->it_op), lvb_len);
- lmm = libcfs_kvzalloc(lvb_len, GFP_NOFS);
+ lmm = kvzalloc(lvb_len, GFP_NOFS);
if (!lmm) {
LDLM_LOCK_PUT(lock);
return -ENOMEM;
diff --git a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
index f8967fd44363..7bceee7f121e 100644
--- a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
+++ b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
@@ -180,7 +180,7 @@ int obd_ioctl_getdata(char **buf, int *len, void __user *arg)
* obdfilter-survey is an example, which relies on ioctl. So we'd
* better avoid vmalloc on ioctl path. LU-66
*/
- *buf = libcfs_kvzalloc(hdr.ioc_len, GFP_KERNEL);
+ *buf = kvzalloc(hdr.ioc_len, GFP_KERNEL);
if (!*buf) {
CERROR("Cannot allocate control buffer of len %d\n",
hdr.ioc_len);
diff --git a/drivers/staging/lustre/lustre/obdclass/llog.c b/drivers/staging/lustre/lustre/obdclass/llog.c
index ed310696a95d..693e1129f1f9 100644
--- a/drivers/staging/lustre/lustre/obdclass/llog.c
+++ b/drivers/staging/lustre/lustre/obdclass/llog.c
@@ -155,7 +155,7 @@ int llog_init_handle(const struct lu_env *env, struct llog_handle *handle,
LASSERT(!handle->lgh_hdr);
LASSERT(chunk_size >= LLOG_MIN_CHUNK_SIZE);
- llh = libcfs_kvzalloc(sizeof(*llh), GFP_KERNEL);
+ llh = kvzalloc(sizeof(*llh), GFP_KERNEL);
if (!llh)
return -ENOMEM;
handle->lgh_hdr = llh;
@@ -240,7 +240,7 @@ static int llog_process_thread(void *arg)
/* expect chunk_size to be power of two */
LASSERT(is_power_of_2(chunk_size));
- buf = libcfs_kvzalloc(chunk_size, GFP_NOFS);
+ buf = kvzalloc(chunk_size, GFP_NOFS);
if (!buf) {
lpi->lpi_rc = -ENOMEM;
return 0;
diff --git a/drivers/staging/lustre/lustre/obdclass/lustre_handles.c b/drivers/staging/lustre/lustre/obdclass/lustre_handles.c
index 9a6377502ae4..f53b1a3c342e 100644
--- a/drivers/staging/lustre/lustre/obdclass/lustre_handles.c
+++ b/drivers/staging/lustre/lustre/obdclass/lustre_handles.c
@@ -184,7 +184,7 @@ int class_handle_init(void)
LASSERT(!handle_hash);
- handle_hash = libcfs_kvzalloc(sizeof(*bucket) * HANDLE_HASH_SIZE,
+ handle_hash = kvzalloc(sizeof(*bucket) * HANDLE_HASH_SIZE,
GFP_KERNEL);
if (!handle_hash)
return -ENOMEM;
diff --git a/drivers/staging/lustre/lustre/ptlrpc/client.c b/drivers/staging/lustre/lustre/ptlrpc/client.c
index 781462621d92..d4c641d2480c 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/client.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/client.c
@@ -547,7 +547,7 @@ int ptlrpc_add_rqs_to_pool(struct ptlrpc_request_pool *pool, int num_rq)
req = ptlrpc_request_cache_alloc(GFP_KERNEL);
if (!req)
return i;
- msg = libcfs_kvzalloc(size, GFP_KERNEL);
+ msg = kvzalloc(size, GFP_KERNEL);
if (!msg) {
ptlrpc_request_cache_free(req);
return i;
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec.c b/drivers/staging/lustre/lustre/ptlrpc/sec.c
index 90e3b3022106..f152ba1af0fc 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec.c
@@ -442,7 +442,7 @@ int sptlrpc_req_ctx_switch(struct ptlrpc_request *req,
/* save request message */
reqmsg_size = req->rq_reqlen;
if (reqmsg_size != 0) {
- reqmsg = libcfs_kvzalloc(reqmsg_size, GFP_NOFS);
+ reqmsg = kvzalloc(reqmsg_size, GFP_NOFS);
if (!reqmsg)
return -ENOMEM;
memcpy(reqmsg, req->rq_reqmsg, reqmsg_size);
@@ -1089,7 +1089,7 @@ int sptlrpc_cli_unwrap_early_reply(struct ptlrpc_request *req,
early_size = req->rq_nob_received;
early_bufsz = size_roundup_power2(early_size);
- early_buf = libcfs_kvzalloc(early_bufsz, GFP_NOFS);
+ early_buf = kvzalloc(early_bufsz, GFP_NOFS);
if (!early_buf) {
rc = -ENOMEM;
goto err_req;
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c b/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
index 134ee727e8b7..2184022ed724 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
@@ -375,7 +375,7 @@ static inline void enc_pools_alloc(void)
{
LASSERT(page_pools.epp_max_pools);
page_pools.epp_pools =
- libcfs_kvzalloc(page_pools.epp_max_pools *
+ kvzalloc(page_pools.epp_max_pools *
sizeof(*page_pools.epp_pools),
GFP_NOFS);
}
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_null.c b/drivers/staging/lustre/lustre/ptlrpc/sec_null.c
index 80cea0b24693..ecc387d1b9b4 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_null.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_null.c
@@ -158,7 +158,7 @@ int null_alloc_reqbuf(struct ptlrpc_sec *sec,
int alloc_size = size_roundup_power2(msgsize);
LASSERT(!req->rq_pool);
- req->rq_reqbuf = libcfs_kvzalloc(alloc_size, GFP_NOFS);
+ req->rq_reqbuf = kvzalloc(alloc_size, GFP_NOFS);
if (!req->rq_reqbuf)
return -ENOMEM;
@@ -201,7 +201,7 @@ int null_alloc_repbuf(struct ptlrpc_sec *sec,
msgsize = size_roundup_power2(msgsize);
- req->rq_repbuf = libcfs_kvzalloc(msgsize, GFP_NOFS);
+ req->rq_repbuf = kvzalloc(msgsize, GFP_NOFS);
if (!req->rq_repbuf)
return -ENOMEM;
@@ -246,7 +246,7 @@ int null_enlarge_reqbuf(struct ptlrpc_sec *sec,
if (req->rq_reqbuf_len < newmsg_size) {
alloc_size = size_roundup_power2(newmsg_size);
- newbuf = libcfs_kvzalloc(alloc_size, GFP_NOFS);
+ newbuf = kvzalloc(alloc_size, GFP_NOFS);
if (!newbuf)
return -ENOMEM;
@@ -317,7 +317,7 @@ int null_alloc_rs(struct ptlrpc_request *req, int msgsize)
/* pre-allocated */
LASSERT(rs->rs_size >= rs_size);
} else {
- rs = libcfs_kvzalloc(rs_size, GFP_NOFS);
+ rs = kvzalloc(rs_size, GFP_NOFS);
if (!rs)
return -ENOMEM;
diff --git a/drivers/staging/lustre/lustre/ptlrpc/sec_plain.c b/drivers/staging/lustre/lustre/ptlrpc/sec_plain.c
index 44e34056515b..ec3d9af76b17 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_plain.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/sec_plain.c
@@ -562,7 +562,7 @@ int plain_alloc_reqbuf(struct ptlrpc_sec *sec,
LASSERT(!req->rq_pool);
alloc_len = size_roundup_power2(alloc_len);
- req->rq_reqbuf = libcfs_kvzalloc(alloc_len, GFP_NOFS);
+ req->rq_reqbuf = kvzalloc(alloc_len, GFP_NOFS);
if (!req->rq_reqbuf)
return -ENOMEM;
@@ -620,7 +620,7 @@ int plain_alloc_repbuf(struct ptlrpc_sec *sec,
alloc_len = size_roundup_power2(alloc_len);
- req->rq_repbuf = libcfs_kvzalloc(alloc_len, GFP_NOFS);
+ req->rq_repbuf = kvzalloc(alloc_len, GFP_NOFS);
if (!req->rq_repbuf)
return -ENOMEM;
@@ -671,7 +671,7 @@ int plain_enlarge_reqbuf(struct ptlrpc_sec *sec,
if (req->rq_reqbuf_len < newbuf_size) {
newbuf_size = size_roundup_power2(newbuf_size);
- newbuf = libcfs_kvzalloc(newbuf_size, GFP_NOFS);
+ newbuf = kvzalloc(newbuf_size, GFP_NOFS);
if (!newbuf)
return -ENOMEM;
@@ -808,7 +808,7 @@ int plain_alloc_rs(struct ptlrpc_request *req, int msgsize)
/* pre-allocated */
LASSERT(rs->rs_size >= rs_size);
} else {
- rs = libcfs_kvzalloc(rs_size, GFP_NOFS);
+ rs = kvzalloc(rs_size, GFP_NOFS);
if (!rs)
return -ENOMEM;
diff --git a/drivers/staging/lustre/lustre/ptlrpc/service.c b/drivers/staging/lustre/lustre/ptlrpc/service.c
index 57e41e2cd30a..79d9f3860022 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/service.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/service.c
@@ -1068,7 +1068,7 @@ static int ptlrpc_at_send_early_reply(struct ptlrpc_request *req)
reqcopy = ptlrpc_request_cache_alloc(GFP_NOFS);
if (!reqcopy)
return -ENOMEM;
- reqmsg = libcfs_kvzalloc(req->rq_reqlen, GFP_NOFS);
+ reqmsg = kvzalloc(req->rq_reqlen, GFP_NOFS);
if (!reqmsg) {
rc = -ENOMEM;
goto out_free;
@@ -2077,7 +2077,7 @@ static int ptlrpc_main(void *arg)
}
/* Alloc reply state structure for this one */
- rs = libcfs_kvzalloc(svc->srv_max_reply_size, GFP_NOFS);
+ rs = kvzalloc(svc->srv_max_reply_size, GFP_NOFS);
if (!rs) {
rc = -ENOMEM;
goto out_srv_fini;
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