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-rw-r--r--fs/ocfs2/cluster/tcp.c10
-rw-r--r--fs/ocfs2/dir.c12
-rw-r--r--fs/ocfs2/dlm/dlmdomain.c28
-rw-r--r--fs/ocfs2/dlmglue.c97
-rw-r--r--fs/ocfs2/ioctl.c38
-rw-r--r--fs/ocfs2/ocfs2.h23
6 files changed, 122 insertions, 86 deletions
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 3b11cb1..ee04ff5 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -210,10 +210,6 @@ static inline void o2net_set_func_stop_time(struct o2net_sock_container *sc)
sc->sc_tv_func_stop = ktime_get();
}
-static ktime_t o2net_get_func_run_time(struct o2net_sock_container *sc)
-{
- return ktime_sub(sc->sc_tv_func_stop, sc->sc_tv_func_start);
-}
#else /* CONFIG_DEBUG_FS */
# define o2net_init_nst(a, b, c, d, e)
# define o2net_set_nst_sock_time(a)
@@ -227,10 +223,14 @@ static ktime_t o2net_get_func_run_time(struct o2net_sock_container *sc)
# define o2net_set_advance_stop_time(a)
# define o2net_set_func_start_time(a)
# define o2net_set_func_stop_time(a)
-# define o2net_get_func_run_time(a) (ktime_t)0
#endif /* CONFIG_DEBUG_FS */
#ifdef CONFIG_OCFS2_FS_STATS
+static ktime_t o2net_get_func_run_time(struct o2net_sock_container *sc)
+{
+ return ktime_sub(sc->sc_tv_func_stop, sc->sc_tv_func_start);
+}
+
static void o2net_update_send_stats(struct o2net_send_tracking *nst,
struct o2net_sock_container *sc)
{
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 0740752..b0c1749 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -322,21 +322,23 @@ static int ocfs2_check_dir_entry(struct inode * dir,
const char *error_msg = NULL;
const int rlen = le16_to_cpu(de->rec_len);
- if (rlen < OCFS2_DIR_REC_LEN(1))
+ if (unlikely(rlen < OCFS2_DIR_REC_LEN(1)))
error_msg = "rec_len is smaller than minimal";
- else if (rlen % 4 != 0)
+ else if (unlikely(rlen % 4 != 0))
error_msg = "rec_len % 4 != 0";
- else if (rlen < OCFS2_DIR_REC_LEN(de->name_len))
+ else if (unlikely(rlen < OCFS2_DIR_REC_LEN(de->name_len)))
error_msg = "rec_len is too small for name_len";
- else if (((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize)
+ else if (unlikely(
+ ((char *) de - bh->b_data) + rlen > dir->i_sb->s_blocksize))
error_msg = "directory entry across blocks";
- if (error_msg != NULL)
+ if (unlikely(error_msg != NULL))
mlog(ML_ERROR, "bad entry in directory #%llu: %s - "
"offset=%lu, inode=%llu, rec_len=%d, name_len=%d\n",
(unsigned long long)OCFS2_I(dir)->ip_blkno, error_msg,
offset, (unsigned long long)le64_to_cpu(de->inode), rlen,
de->name_len);
+
return error_msg == NULL ? 1 : 0;
}
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 5391f28..7540a49 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -926,9 +926,10 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data,
}
static int dlm_match_regions(struct dlm_ctxt *dlm,
- struct dlm_query_region *qr)
+ struct dlm_query_region *qr,
+ char *local, int locallen)
{
- char *local = NULL, *remote = qr->qr_regions;
+ char *remote = qr->qr_regions;
char *l, *r;
int localnr, i, j, foundit;
int status = 0;
@@ -957,13 +958,8 @@ static int dlm_match_regions(struct dlm_ctxt *dlm,
r += O2HB_MAX_REGION_NAME_LEN;
}
- local = kmalloc(sizeof(qr->qr_regions), GFP_ATOMIC);
- if (!local) {
- status = -ENOMEM;
- goto bail;
- }
-
- localnr = o2hb_get_all_regions(local, O2NM_MAX_REGIONS);
+ localnr = min(O2NM_MAX_REGIONS, locallen/O2HB_MAX_REGION_NAME_LEN);
+ localnr = o2hb_get_all_regions(local, (u8)localnr);
/* compare local regions with remote */
l = local;
@@ -1012,8 +1008,6 @@ static int dlm_match_regions(struct dlm_ctxt *dlm,
}
bail:
- kfree(local);
-
return status;
}
@@ -1075,6 +1069,7 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
{
struct dlm_query_region *qr;
struct dlm_ctxt *dlm = NULL;
+ char *local = NULL;
int status = 0;
int locked = 0;
@@ -1083,6 +1078,13 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
mlog(0, "Node %u queries hb regions on domain %s\n", qr->qr_node,
qr->qr_domain);
+ /* buffer used in dlm_mast_regions() */
+ local = kmalloc(sizeof(qr->qr_regions), GFP_KERNEL);
+ if (!local) {
+ status = -ENOMEM;
+ goto bail;
+ }
+
status = -EINVAL;
spin_lock(&dlm_domain_lock);
@@ -1112,13 +1114,15 @@ static int dlm_query_region_handler(struct o2net_msg *msg, u32 len,
goto bail;
}
- status = dlm_match_regions(dlm, qr);
+ status = dlm_match_regions(dlm, qr, local, sizeof(qr->qr_regions));
bail:
if (locked)
spin_unlock(&dlm->spinlock);
spin_unlock(&dlm_domain_lock);
+ kfree(local);
+
return status;
}
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 7eb4b8d..7642d7c 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -64,7 +64,7 @@ struct ocfs2_mask_waiter {
unsigned long mw_mask;
unsigned long mw_goal;
#ifdef CONFIG_OCFS2_FS_STATS
- unsigned long long mw_lock_start;
+ ktime_t mw_lock_start;
#endif
};
@@ -431,44 +431,41 @@ static void ocfs2_remove_lockres_tracking(struct ocfs2_lock_res *res)
#ifdef CONFIG_OCFS2_FS_STATS
static void ocfs2_init_lock_stats(struct ocfs2_lock_res *res)
{
- res->l_lock_num_prmode = 0;
- res->l_lock_num_prmode_failed = 0;
- res->l_lock_total_prmode = 0;
- res->l_lock_max_prmode = 0;
- res->l_lock_num_exmode = 0;
- res->l_lock_num_exmode_failed = 0;
- res->l_lock_total_exmode = 0;
- res->l_lock_max_exmode = 0;
res->l_lock_refresh = 0;
+ memset(&res->l_lock_prmode, 0, sizeof(struct ocfs2_lock_stats));
+ memset(&res->l_lock_exmode, 0, sizeof(struct ocfs2_lock_stats));
}
static void ocfs2_update_lock_stats(struct ocfs2_lock_res *res, int level,
struct ocfs2_mask_waiter *mw, int ret)
{
- unsigned long long *num, *sum;
- unsigned int *max, *failed;
- struct timespec ts = current_kernel_time();
- unsigned long long time = timespec_to_ns(&ts) - mw->mw_lock_start;
-
- if (level == LKM_PRMODE) {
- num = &res->l_lock_num_prmode;
- sum = &res->l_lock_total_prmode;
- max = &res->l_lock_max_prmode;
- failed = &res->l_lock_num_prmode_failed;
- } else if (level == LKM_EXMODE) {
- num = &res->l_lock_num_exmode;
- sum = &res->l_lock_total_exmode;
- max = &res->l_lock_max_exmode;
- failed = &res->l_lock_num_exmode_failed;
- } else
+ u32 usec;
+ ktime_t kt;
+ struct ocfs2_lock_stats *stats;
+
+ if (level == LKM_PRMODE)
+ stats = &res->l_lock_prmode;
+ else if (level == LKM_EXMODE)
+ stats = &res->l_lock_exmode;
+ else
return;
- (*num)++;
- (*sum) += time;
- if (time > *max)
- *max = time;
+ kt = ktime_sub(ktime_get(), mw->mw_lock_start);
+ usec = ktime_to_us(kt);
+
+ stats->ls_gets++;
+ stats->ls_total += ktime_to_ns(kt);
+ /* overflow */
+ if (unlikely(stats->ls_gets) == 0) {
+ stats->ls_gets++;
+ stats->ls_total = ktime_to_ns(kt);
+ }
+
+ if (stats->ls_max < usec)
+ stats->ls_max = usec;
+
if (ret)
- (*failed)++;
+ stats->ls_fail++;
}
static inline void ocfs2_track_lock_refresh(struct ocfs2_lock_res *lockres)
@@ -478,8 +475,7 @@ static inline void ocfs2_track_lock_refresh(struct ocfs2_lock_res *lockres)
static inline void ocfs2_init_start_time(struct ocfs2_mask_waiter *mw)
{
- struct timespec ts = current_kernel_time();
- mw->mw_lock_start = timespec_to_ns(&ts);
+ mw->mw_lock_start = ktime_get();
}
#else
static inline void ocfs2_init_lock_stats(struct ocfs2_lock_res *res)
@@ -2774,8 +2770,15 @@ static void *ocfs2_dlm_seq_next(struct seq_file *m, void *v, loff_t *pos)
return iter;
}
-/* So that debugfs.ocfs2 can determine which format is being used */
-#define OCFS2_DLM_DEBUG_STR_VERSION 2
+/*
+ * Version is used by debugfs.ocfs2 to determine the format being used
+ *
+ * New in version 2
+ * - Lock stats printed
+ * New in version 3
+ * - Max time in lock stats is in usecs (instead of nsecs)
+ */
+#define OCFS2_DLM_DEBUG_STR_VERSION 3
static int ocfs2_dlm_seq_show(struct seq_file *m, void *v)
{
int i;
@@ -2817,18 +2820,18 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v)
seq_printf(m, "0x%x\t", lvb[i]);
#ifdef CONFIG_OCFS2_FS_STATS
-# define lock_num_prmode(_l) (_l)->l_lock_num_prmode
-# define lock_num_exmode(_l) (_l)->l_lock_num_exmode
-# define lock_num_prmode_failed(_l) (_l)->l_lock_num_prmode_failed
-# define lock_num_exmode_failed(_l) (_l)->l_lock_num_exmode_failed
-# define lock_total_prmode(_l) (_l)->l_lock_total_prmode
-# define lock_total_exmode(_l) (_l)->l_lock_total_exmode
-# define lock_max_prmode(_l) (_l)->l_lock_max_prmode
-# define lock_max_exmode(_l) (_l)->l_lock_max_exmode
-# define lock_refresh(_l) (_l)->l_lock_refresh
+# define lock_num_prmode(_l) ((_l)->l_lock_prmode.ls_gets)
+# define lock_num_exmode(_l) ((_l)->l_lock_exmode.ls_gets)
+# define lock_num_prmode_failed(_l) ((_l)->l_lock_prmode.ls_fail)
+# define lock_num_exmode_failed(_l) ((_l)->l_lock_exmode.ls_fail)
+# define lock_total_prmode(_l) ((_l)->l_lock_prmode.ls_total)
+# define lock_total_exmode(_l) ((_l)->l_lock_exmode.ls_total)
+# define lock_max_prmode(_l) ((_l)->l_lock_prmode.ls_max)
+# define lock_max_exmode(_l) ((_l)->l_lock_exmode.ls_max)
+# define lock_refresh(_l) ((_l)->l_lock_refresh)
#else
-# define lock_num_prmode(_l) (0ULL)
-# define lock_num_exmode(_l) (0ULL)
+# define lock_num_prmode(_l) (0)
+# define lock_num_exmode(_l) (0)
# define lock_num_prmode_failed(_l) (0)
# define lock_num_exmode_failed(_l) (0)
# define lock_total_prmode(_l) (0ULL)
@@ -2838,8 +2841,8 @@ static int ocfs2_dlm_seq_show(struct seq_file *m, void *v)
# define lock_refresh(_l) (0)
#endif
/* The following seq_print was added in version 2 of this output */
- seq_printf(m, "%llu\t"
- "%llu\t"
+ seq_printf(m, "%u\t"
+ "%u\t"
"%u\t"
"%u\t"
"%llu\t"
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index d9bfa90..f97a213 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -45,6 +45,22 @@ static inline void __o2info_set_request_error(struct ocfs2_info_request *kreq,
#define o2info_set_request_error(a, b) \
__o2info_set_request_error((struct ocfs2_info_request *)&(a), b)
+static inline void __o2info_set_request_filled(struct ocfs2_info_request *req)
+{
+ req->ir_flags |= OCFS2_INFO_FL_FILLED;
+}
+
+#define o2info_set_request_filled(a) \
+ __o2info_set_request_filled((struct ocfs2_info_request *)&(a))
+
+static inline void __o2info_clear_request_filled(struct ocfs2_info_request *req)
+{
+ req->ir_flags &= ~OCFS2_INFO_FL_FILLED;
+}
+
+#define o2info_clear_request_filled(a) \
+ __o2info_clear_request_filled((struct ocfs2_info_request *)&(a))
+
static int ocfs2_get_inode_attr(struct inode *inode, unsigned *flags)
{
int status;
@@ -136,7 +152,8 @@ int ocfs2_info_handle_blocksize(struct inode *inode,
goto bail;
oib.ib_blocksize = inode->i_sb->s_blocksize;
- oib.ib_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+ o2info_set_request_filled(oib);
if (o2info_to_user(oib, req))
goto bail;
@@ -160,7 +177,8 @@ int ocfs2_info_handle_clustersize(struct inode *inode,
goto bail;
oic.ic_clustersize = osb->s_clustersize;
- oic.ic_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+ o2info_set_request_filled(oic);
if (o2info_to_user(oic, req))
goto bail;
@@ -184,7 +202,8 @@ int ocfs2_info_handle_maxslots(struct inode *inode,
goto bail;
oim.im_max_slots = osb->max_slots;
- oim.im_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+ o2info_set_request_filled(oim);
if (o2info_to_user(oim, req))
goto bail;
@@ -208,7 +227,8 @@ int ocfs2_info_handle_label(struct inode *inode,
goto bail;
memcpy(oil.il_label, osb->vol_label, OCFS2_MAX_VOL_LABEL_LEN);
- oil.il_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+ o2info_set_request_filled(oil);
if (o2info_to_user(oil, req))
goto bail;
@@ -232,7 +252,8 @@ int ocfs2_info_handle_uuid(struct inode *inode,
goto bail;
memcpy(oiu.iu_uuid_str, osb->uuid_str, OCFS2_TEXT_UUID_LEN + 1);
- oiu.iu_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+ o2info_set_request_filled(oiu);
if (o2info_to_user(oiu, req))
goto bail;
@@ -258,7 +279,8 @@ int ocfs2_info_handle_fs_features(struct inode *inode,
oif.if_compat_features = osb->s_feature_compat;
oif.if_incompat_features = osb->s_feature_incompat;
oif.if_ro_compat_features = osb->s_feature_ro_compat;
- oif.if_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+
+ o2info_set_request_filled(oif);
if (o2info_to_user(oif, req))
goto bail;
@@ -283,7 +305,7 @@ int ocfs2_info_handle_journal_size(struct inode *inode,
oij.ij_journal_size = osb->journal->j_inode->i_size;
- oij.ij_req.ir_flags |= OCFS2_INFO_FL_FILLED;
+ o2info_set_request_filled(oij);
if (o2info_to_user(oij, req))
goto bail;
@@ -305,7 +327,7 @@ int ocfs2_info_handle_unknown(struct inode *inode,
if (o2info_from_user(oir, req))
goto bail;
- oir.ir_flags &= ~OCFS2_INFO_FL_FILLED;
+ o2info_clear_request_filled(oir);
if (o2info_to_user(oir, req))
goto bail;
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 51cd689..4e3d3c1 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -147,6 +147,17 @@ struct ocfs2_lock_res_ops;
typedef void (*ocfs2_lock_callback)(int status, unsigned long data);
+#ifdef CONFIG_OCFS2_FS_STATS
+struct ocfs2_lock_stats {
+ u64 ls_total; /* Total wait in NSEC */
+ u32 ls_gets; /* Num acquires */
+ u32 ls_fail; /* Num failed acquires */
+
+ /* Storing max wait in usecs saves 24 bytes per inode */
+ u32 ls_max; /* Max wait in USEC */
+};
+#endif
+
struct ocfs2_lock_res {
void *l_priv;
struct ocfs2_lock_res_ops *l_ops;
@@ -182,15 +193,9 @@ struct ocfs2_lock_res {
struct list_head l_debug_list;
#ifdef CONFIG_OCFS2_FS_STATS
- unsigned long long l_lock_num_prmode; /* PR acquires */
- unsigned long long l_lock_num_exmode; /* EX acquires */
- unsigned int l_lock_num_prmode_failed; /* Failed PR gets */
- unsigned int l_lock_num_exmode_failed; /* Failed EX gets */
- unsigned long long l_lock_total_prmode; /* Tot wait for PR */
- unsigned long long l_lock_total_exmode; /* Tot wait for EX */
- unsigned int l_lock_max_prmode; /* Max wait for PR */
- unsigned int l_lock_max_exmode; /* Max wait for EX */
- unsigned int l_lock_refresh; /* Disk refreshes */
+ struct ocfs2_lock_stats l_lock_prmode; /* PR mode stats */
+ u32 l_lock_refresh; /* Disk refreshes */
+ struct ocfs2_lock_stats l_lock_exmode; /* EX mode stats */
#endif
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map l_lockdep_map;
generated by cgit v1.1 at 2024-06-07 22:41:58 +0000