2014-02-13 10:53:06

by Peng Tao

[permalink] [raw]
Subject: [PATCH 1/3] staging/lustre/libcfs: remove user space code from kernel_user_comm.c

Cc: Andreas Dilger <[email protected]>
Cc: Oleg Drokin <[email protected]>
Signed-off-by: Peng Tao <[email protected]>
---
.../lustre/lustre/libcfs/kernel_user_comm.c | 102 --------------------
1 files changed, 0 insertions(+), 102 deletions(-)

diff --git a/drivers/staging/lustre/lustre/libcfs/kernel_user_comm.c b/drivers/staging/lustre/lustre/libcfs/kernel_user_comm.c
index 7b2c315..b6ddc99 100644
--- a/drivers/staging/lustre/lustre/libcfs/kernel_user_comm.c
+++ b/drivers/staging/lustre/lustre/libcfs/kernel_user_comm.c
@@ -44,106 +44,6 @@

#include <linux/libcfs/libcfs.h>

-#ifdef LUSTRE_UTILS
-/* This is the userspace side. */
-
-/** Start the userspace side of a KUC pipe.
- * @param link Private descriptor for pipe/socket.
- * @param groups KUC broadcast group to listen to
- * (can be null for unicast to this pid)
- */
-int libcfs_ukuc_start(lustre_kernelcomm *link, int group)
-{
- int pfd[2];
-
- if (pipe(pfd) < 0)
- return -errno;
-
- memset(link, 0, sizeof(*link));
- link->lk_rfd = pfd[0];
- link->lk_wfd = pfd[1];
- link->lk_group = group;
- link->lk_uid = getpid();
- return 0;
-}
-
-int libcfs_ukuc_stop(lustre_kernelcomm *link)
-{
- if (link->lk_wfd > 0)
- close(link->lk_wfd);
- return close(link->lk_rfd);
-}
-
-#define lhsz sizeof(*kuch)
-
-/** Read a message from the link.
- * Allocates memory, returns handle
- *
- * @param link Private descriptor for pipe/socket.
- * @param buf Buffer to read into, must include size for kuc_hdr
- * @param maxsize Maximum message size allowed
- * @param transport Only listen to messages on this transport
- * (and the generic transport)
- */
-int libcfs_ukuc_msg_get(lustre_kernelcomm *link, char *buf, int maxsize,
- int transport)
-{
- struct kuc_hdr *kuch;
- int rc = 0;
-
- memset(buf, 0, maxsize);
-
- CDEBUG(D_KUC, "Waiting for message from kernel on fd %d\n",
- link->lk_rfd);
-
- while (1) {
- /* Read header first to get message size */
- rc = read(link->lk_rfd, buf, lhsz);
- if (rc <= 0) {
- rc = -errno;
- break;
- }
- kuch = (struct kuc_hdr *)buf;
-
- CDEBUG(D_KUC, "Received message mg=%x t=%d m=%d l=%d\n",
- kuch->kuc_magic, kuch->kuc_transport, kuch->kuc_msgtype,
- kuch->kuc_msglen);
-
- if (kuch->kuc_magic != KUC_MAGIC) {
- CERROR("bad message magic %x != %x\n",
- kuch->kuc_magic, KUC_MAGIC);
- rc = -EPROTO;
- break;
- }
-
- if (kuch->kuc_msglen > maxsize) {
- rc = -EMSGSIZE;
- break;
- }
-
- /* Read payload */
- rc = read(link->lk_rfd, buf + lhsz, kuch->kuc_msglen - lhsz);
- if (rc < 0) {
- rc = -errno;
- break;
- }
- if (rc < (kuch->kuc_msglen - lhsz)) {
- CERROR("short read: got %d of %d bytes\n",
- rc, kuch->kuc_msglen);
- rc = -EPROTO;
- break;
- }
-
- if (kuch->kuc_transport == transport ||
- kuch->kuc_transport == KUC_TRANSPORT_GENERIC) {
- return 0;
- }
- /* Drop messages for other transports */
- }
- return rc;
-}
-
-#else /* LUSTRE_UTILS */
/* This is the kernel side (liblustre as well). */

/**
@@ -338,5 +238,3 @@ int libcfs_kkuc_group_foreach(int group, libcfs_kkuc_cb_t cb_func,
return rc;
}
EXPORT_SYMBOL(libcfs_kkuc_group_foreach);
-
-#endif /* LUSTRE_UTILS */
--
1.7.7.6


2014-02-13 10:53:21

by Peng Tao

[permalink] [raw]
Subject: [PATCH 2/3] staging/lustre/libcfs: remove cfs_hash_long

Cc: Andreas Dilger <[email protected]>
Cc: Oleg Drokin <[email protected]>
Signed-off-by: Peng Tao <[email protected]>
---
.../lustre/include/linux/libcfs/libcfs_hash.h | 2 --
.../staging/lustre/include/linux/lnet/lib-lnet.h | 2 +-
drivers/staging/lustre/lnet/lnet/api-ni.c | 2 +-
drivers/staging/lustre/lnet/lnet/lib-ptl.c | 2 +-
drivers/staging/lustre/lustre/include/lustre_fid.h | 2 +-
drivers/staging/lustre/lustre/ldlm/ldlm_resource.c | 4 ++--
drivers/staging/lustre/lustre/obdclass/lu_object.c | 4 ++--
.../lustre/lustre/ptlrpc/gss/gss_svc_upcall.c | 2 +-
8 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_hash.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_hash.h
index 9d5ee1a..e5d5db2 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs_hash.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_hash.h
@@ -65,8 +65,6 @@

#include <linux/hash.h>

-#define cfs_hash_long(val, bits) hash_long(val, bits)
-
/** disable debug */
#define CFS_HASH_DEBUG_NONE 0
/** record hash depth and output to console when it's too deep,
diff --git a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
index 3ac2bb5..856fcfa 100644
--- a/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
+++ b/drivers/staging/lustre/include/linux/lnet/lib-lnet.h
@@ -628,7 +628,7 @@ void lnet_ni_free(lnet_ni_t *ni);
static inline int
lnet_nid2peerhash(lnet_nid_t nid)
{
- return cfs_hash_long(nid, LNET_PEER_HASH_BITS);
+ return hash_long(nid, LNET_PEER_HASH_BITS);
}

static inline struct list_head *
diff --git a/drivers/staging/lustre/lnet/lnet/api-ni.c b/drivers/staging/lustre/lnet/lnet/api-ni.c
index c562ff3..a18fee5 100644
--- a/drivers/staging/lustre/lnet/lnet/api-ni.c
+++ b/drivers/staging/lustre/lnet/lnet/api-ni.c
@@ -770,7 +770,7 @@ lnet_nid_cpt_hash(lnet_nid_t nid, unsigned int number)
if (number == 1)
return 0;

- val = cfs_hash_long(key, LNET_CPT_BITS);
+ val = hash_long(key, LNET_CPT_BITS);
/* NB: LNET_CP_NUMBER doesn't have to be PO2 */
if (val < number)
return val;
diff --git a/drivers/staging/lustre/lnet/lnet/lib-ptl.c b/drivers/staging/lustre/lnet/lnet/lib-ptl.c
index 6fffd5e..920df69 100644
--- a/drivers/staging/lustre/lnet/lnet/lib-ptl.c
+++ b/drivers/staging/lustre/lnet/lnet/lib-ptl.c
@@ -366,7 +366,7 @@ lnet_mt_match_head(struct lnet_match_table *mtable,
unsigned long hash = mbits + id.nid + id.pid;

LASSERT(lnet_ptl_is_unique(ptl));
- hash = cfs_hash_long(hash, LNET_MT_HASH_BITS);
+ hash = hash_long(hash, LNET_MT_HASH_BITS);
return &mtable->mt_mhash[hash];
}
}
diff --git a/drivers/staging/lustre/lustre/include/lustre_fid.h b/drivers/staging/lustre/lustre/include/lustre_fid.h
index 84a897e..cf78761 100644
--- a/drivers/staging/lustre/lustre/include/lustre_fid.h
+++ b/drivers/staging/lustre/lustre/include/lustre_fid.h
@@ -685,7 +685,7 @@ static inline __u32 fid_hash(const struct lu_fid *f, int bits)
{
/* all objects with same id and different versions will belong to same
* collisions list. */
- return cfs_hash_long(fid_flatten(f), bits);
+ return hash_long(fid_flatten(f), bits);
}

/**
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
index 5f89864..2824d4a 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
@@ -421,9 +421,9 @@ static unsigned ldlm_res_hop_fid_hash(struct cfs_hash *hs,
} else {
val = fid_oid(&fid);
}
- hash = cfs_hash_long(hash, hs->hs_bkt_bits);
+ hash = hash_long(hash, hs->hs_bkt_bits);
/* give me another random factor */
- hash -= cfs_hash_long((unsigned long)hs, val % 11 + 3);
+ hash -= hash_long((unsigned long)hs, val % 11 + 3);

hash <<= hs->hs_cur_bits - hs->hs_bkt_bits;
hash |= ldlm_res_hop_hash(hs, key, CFS_HASH_NBKT(hs) - 1);
diff --git a/drivers/staging/lustre/lustre/obdclass/lu_object.c b/drivers/staging/lustre/lustre/obdclass/lu_object.c
index 9887d8f..1fd6fa1 100644
--- a/drivers/staging/lustre/lustre/obdclass/lu_object.c
+++ b/drivers/staging/lustre/lustre/obdclass/lu_object.c
@@ -890,10 +890,10 @@ static unsigned lu_obj_hop_hash(struct cfs_hash *hs,

hash = fid_flatten32(fid);
hash += (hash >> 4) + (hash << 12); /* mixing oid and seq */
- hash = cfs_hash_long(hash, hs->hs_bkt_bits);
+ hash = hash_long(hash, hs->hs_bkt_bits);

/* give me another random factor */
- hash -= cfs_hash_long((unsigned long)hs, fid_oid(fid) % 11 + 3);
+ hash -= hash_long((unsigned long)hs, fid_oid(fid) % 11 + 3);

hash <<= hs->hs_cur_bits - hs->hs_bkt_bits;
hash |= (fid_seq(fid) + fid_oid(fid)) & (CFS_HASH_NBKT(hs) - 1);
diff --git a/drivers/staging/lustre/lustre/ptlrpc/gss/gss_svc_upcall.c b/drivers/staging/lustre/lustre/ptlrpc/gss/gss_svc_upcall.c
index 8d25a70..f0aba50 100644
--- a/drivers/staging/lustre/lustre/ptlrpc/gss/gss_svc_upcall.c
+++ b/drivers/staging/lustre/lustre/ptlrpc/gss/gss_svc_upcall.c
@@ -102,7 +102,7 @@ static inline unsigned long hash_mem(char *buf, int length, int bits)
len++;

if ((len & (BITS_PER_LONG/8-1)) == 0)
- hash = cfs_hash_long(hash^l, BITS_PER_LONG);
+ hash = hash_long(hash^l, BITS_PER_LONG);
} while (len);

return hash >> (BITS_PER_LONG - bits);
--
1.7.7.6

2014-02-13 10:53:40

by Peng Tao

[permalink] [raw]
Subject: [PATCH 3/3] staging/lustre: fix coccinelle warnings

From: Fengguang Wu <[email protected]>

drivers/staging/lustre/lustre/llite/dir.c:1416:2-8: Replace memcpy with struct assignment

Generated by: coccinelle/misc/memcpy-assign.cocci

CC: Peng Tao <[email protected]>
CC: Andreas Dilger <[email protected]>
CC: Oleg Drokin <[email protected]>
CC: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Fengguang Wu <[email protected]>
---
drivers/staging/lustre/lustre/llite/dir.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index 78ee3b1..fd0dd20e 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -1400,7 +1400,7 @@ lmv_out_free:
if (tmp == NULL)
GOTO(free_lmv, rc = -ENOMEM);

- memcpy(tmp, &lum, sizeof(lum));
+ *tmp = lum;
tmp->lum_type = LMV_STRIPE_TYPE;
tmp->lum_stripe_count = 1;
mdtindex = ll_get_mdt_idx(inode);
--
1.7.7.6