提交 7d8a804c 编写于 作者: L Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
  dlm: fs/dlm/ast.c: fix warning
  dlm: add new debugfs entry
  dlm: add time stamp of blocking callback
  dlm: change lock time stamping
  dlm: improve how bast mode handling
  dlm: remove extra blocking callback check
  dlm: replace schedule with cond_resched
  dlm: remove kmap/kunmap
  dlm: trivial annotation of be16 value
  dlm: fix up memory allocation flags
...@@ -2,7 +2,7 @@ ...@@ -2,7 +2,7 @@
******************************************************************************* *******************************************************************************
** **
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. ** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
** **
** This copyrighted material is made available to anyone wishing to use, ** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions ** modify, copy, or redistribute it subject to the terms and conditions
...@@ -33,10 +33,10 @@ void dlm_del_ast(struct dlm_lkb *lkb) ...@@ -33,10 +33,10 @@ void dlm_del_ast(struct dlm_lkb *lkb)
spin_unlock(&ast_queue_lock); spin_unlock(&ast_queue_lock);
} }
void dlm_add_ast(struct dlm_lkb *lkb, int type) void dlm_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
{ {
if (lkb->lkb_flags & DLM_IFL_USER) { if (lkb->lkb_flags & DLM_IFL_USER) {
dlm_user_add_ast(lkb, type); dlm_user_add_ast(lkb, type, bastmode);
return; return;
} }
...@@ -46,6 +46,8 @@ void dlm_add_ast(struct dlm_lkb *lkb, int type) ...@@ -46,6 +46,8 @@ void dlm_add_ast(struct dlm_lkb *lkb, int type)
list_add_tail(&lkb->lkb_astqueue, &ast_queue); list_add_tail(&lkb->lkb_astqueue, &ast_queue);
} }
lkb->lkb_ast_type |= type; lkb->lkb_ast_type |= type;
if (bastmode)
lkb->lkb_bastmode = bastmode;
spin_unlock(&ast_queue_lock); spin_unlock(&ast_queue_lock);
set_bit(WAKE_ASTS, &astd_wakeflags); set_bit(WAKE_ASTS, &astd_wakeflags);
...@@ -59,50 +61,40 @@ static void process_asts(void) ...@@ -59,50 +61,40 @@ static void process_asts(void)
struct dlm_lkb *lkb; struct dlm_lkb *lkb;
void (*cast) (void *astparam); void (*cast) (void *astparam);
void (*bast) (void *astparam, int mode); void (*bast) (void *astparam, int mode);
int type = 0, found, bmode; int type = 0, bastmode;
for (;;) { repeat:
found = 0; spin_lock(&ast_queue_lock);
spin_lock(&ast_queue_lock); list_for_each_entry(lkb, &ast_queue, lkb_astqueue) {
list_for_each_entry(lkb, &ast_queue, lkb_astqueue) { r = lkb->lkb_resource;
r = lkb->lkb_resource; ls = r->res_ls;
ls = r->res_ls;
if (dlm_locking_stopped(ls))
if (dlm_locking_stopped(ls)) continue;
continue;
list_del(&lkb->lkb_astqueue);
type = lkb->lkb_ast_type;
lkb->lkb_ast_type = 0;
found = 1;
break;
}
spin_unlock(&ast_queue_lock);
if (!found) list_del(&lkb->lkb_astqueue);
break; type = lkb->lkb_ast_type;
lkb->lkb_ast_type = 0;
bastmode = lkb->lkb_bastmode;
spin_unlock(&ast_queue_lock);
cast = lkb->lkb_astfn; cast = lkb->lkb_astfn;
bast = lkb->lkb_bastfn; bast = lkb->lkb_bastfn;
bmode = lkb->lkb_bastmode;
if ((type & AST_COMP) && cast) if ((type & AST_COMP) && cast)
cast(lkb->lkb_astparam); cast(lkb->lkb_astparam);
/* FIXME: Is it safe to look at lkb_grmode here
without doing a lock_rsb() ?
Look at other checks in v1 to avoid basts. */
if ((type & AST_BAST) && bast) if ((type & AST_BAST) && bast)
if (!dlm_modes_compat(lkb->lkb_grmode, bmode)) bast(lkb->lkb_astparam, bastmode);
bast(lkb->lkb_astparam, bmode);
/* this removes the reference added by dlm_add_ast /* this removes the reference added by dlm_add_ast
and may result in the lkb being freed */ and may result in the lkb being freed */
dlm_put_lkb(lkb); dlm_put_lkb(lkb);
schedule(); cond_resched();
goto repeat;
} }
spin_unlock(&ast_queue_lock);
} }
static inline int no_asts(void) static inline int no_asts(void)
......
/****************************************************************************** /******************************************************************************
******************************************************************************* *******************************************************************************
** **
** Copyright (C) 2005 Red Hat, Inc. All rights reserved. ** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
** **
** This copyrighted material is made available to anyone wishing to use, ** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions ** modify, copy, or redistribute it subject to the terms and conditions
...@@ -13,7 +13,7 @@ ...@@ -13,7 +13,7 @@
#ifndef __ASTD_DOT_H__ #ifndef __ASTD_DOT_H__
#define __ASTD_DOT_H__ #define __ASTD_DOT_H__
void dlm_add_ast(struct dlm_lkb *lkb, int type); void dlm_add_ast(struct dlm_lkb *lkb, int type, int bastmode);
void dlm_del_ast(struct dlm_lkb *lkb); void dlm_del_ast(struct dlm_lkb *lkb);
void dlm_astd_wake(void); void dlm_astd_wake(void);
......
/****************************************************************************** /******************************************************************************
******************************************************************************* *******************************************************************************
** **
** Copyright (C) 2005 Red Hat, Inc. All rights reserved. ** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
** **
** This copyrighted material is made available to anyone wishing to use, ** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions ** modify, copy, or redistribute it subject to the terms and conditions
...@@ -27,7 +27,7 @@ static struct dentry *dlm_root; ...@@ -27,7 +27,7 @@ static struct dentry *dlm_root;
struct rsb_iter { struct rsb_iter {
int entry; int entry;
int locks; int format;
int header; int header;
struct dlm_ls *ls; struct dlm_ls *ls;
struct list_head *next; struct list_head *next;
...@@ -60,8 +60,8 @@ static char *print_lockmode(int mode) ...@@ -60,8 +60,8 @@ static char *print_lockmode(int mode)
} }
} }
static void print_resource_lock(struct seq_file *s, struct dlm_lkb *lkb, static void print_format1_lock(struct seq_file *s, struct dlm_lkb *lkb,
struct dlm_rsb *res) struct dlm_rsb *res)
{ {
seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_grmode)); seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_grmode));
...@@ -83,7 +83,7 @@ static void print_resource_lock(struct seq_file *s, struct dlm_lkb *lkb, ...@@ -83,7 +83,7 @@ static void print_resource_lock(struct seq_file *s, struct dlm_lkb *lkb,
seq_printf(s, "\n"); seq_printf(s, "\n");
} }
static int print_resource(struct dlm_rsb *res, struct seq_file *s) static int print_format1(struct dlm_rsb *res, struct seq_file *s)
{ {
struct dlm_lkb *lkb; struct dlm_lkb *lkb;
int i, lvblen = res->res_ls->ls_lvblen, recover_list, root_list; int i, lvblen = res->res_ls->ls_lvblen, recover_list, root_list;
...@@ -134,15 +134,15 @@ static int print_resource(struct dlm_rsb *res, struct seq_file *s) ...@@ -134,15 +134,15 @@ static int print_resource(struct dlm_rsb *res, struct seq_file *s)
/* Print the locks attached to this resource */ /* Print the locks attached to this resource */
seq_printf(s, "Granted Queue\n"); seq_printf(s, "Granted Queue\n");
list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue) list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue)
print_resource_lock(s, lkb, res); print_format1_lock(s, lkb, res);
seq_printf(s, "Conversion Queue\n"); seq_printf(s, "Conversion Queue\n");
list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue) list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue)
print_resource_lock(s, lkb, res); print_format1_lock(s, lkb, res);
seq_printf(s, "Waiting Queue\n"); seq_printf(s, "Waiting Queue\n");
list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue) list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue)
print_resource_lock(s, lkb, res); print_format1_lock(s, lkb, res);
if (list_empty(&res->res_lookup)) if (list_empty(&res->res_lookup))
goto out; goto out;
...@@ -160,23 +160,24 @@ static int print_resource(struct dlm_rsb *res, struct seq_file *s) ...@@ -160,23 +160,24 @@ static int print_resource(struct dlm_rsb *res, struct seq_file *s)
return 0; return 0;
} }
static void print_lock(struct seq_file *s, struct dlm_lkb *lkb, struct dlm_rsb *r) static void print_format2_lock(struct seq_file *s, struct dlm_lkb *lkb,
struct dlm_rsb *r)
{ {
unsigned int waiting = 0; u64 xid = 0;
uint64_t xid = 0; u64 us;
if (lkb->lkb_flags & DLM_IFL_USER) { if (lkb->lkb_flags & DLM_IFL_USER) {
if (lkb->lkb_ua) if (lkb->lkb_ua)
xid = lkb->lkb_ua->xid; xid = lkb->lkb_ua->xid;
} }
if (lkb->lkb_timestamp) /* microseconds since lkb was added to current queue */
waiting = jiffies_to_msecs(jiffies - lkb->lkb_timestamp); us = ktime_to_us(ktime_sub(ktime_get(), lkb->lkb_timestamp));
/* id nodeid remid pid xid exflags flags sts grmode rqmode time_ms /* id nodeid remid pid xid exflags flags sts grmode rqmode time_us
r_nodeid r_len r_name */ r_nodeid r_len r_name */
seq_printf(s, "%x %d %x %u %llu %x %x %d %d %d %u %u %d \"%s\"\n", seq_printf(s, "%x %d %x %u %llu %x %x %d %d %d %llu %u %d \"%s\"\n",
lkb->lkb_id, lkb->lkb_id,
lkb->lkb_nodeid, lkb->lkb_nodeid,
lkb->lkb_remid, lkb->lkb_remid,
...@@ -187,26 +188,114 @@ static void print_lock(struct seq_file *s, struct dlm_lkb *lkb, struct dlm_rsb * ...@@ -187,26 +188,114 @@ static void print_lock(struct seq_file *s, struct dlm_lkb *lkb, struct dlm_rsb *
lkb->lkb_status, lkb->lkb_status,
lkb->lkb_grmode, lkb->lkb_grmode,
lkb->lkb_rqmode, lkb->lkb_rqmode,
waiting, (unsigned long long)us,
r->res_nodeid, r->res_nodeid,
r->res_length, r->res_length,
r->res_name); r->res_name);
} }
static int print_locks(struct dlm_rsb *r, struct seq_file *s) static int print_format2(struct dlm_rsb *r, struct seq_file *s)
{ {
struct dlm_lkb *lkb; struct dlm_lkb *lkb;
lock_rsb(r); lock_rsb(r);
list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue) list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue)
print_lock(s, lkb, r); print_format2_lock(s, lkb, r);
list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue) list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue)
print_lock(s, lkb, r); print_format2_lock(s, lkb, r);
list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue) list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue)
print_lock(s, lkb, r); print_format2_lock(s, lkb, r);
unlock_rsb(r);
return 0;
}
static void print_format3_lock(struct seq_file *s, struct dlm_lkb *lkb,
int rsb_lookup)
{
u64 xid = 0;
if (lkb->lkb_flags & DLM_IFL_USER) {
if (lkb->lkb_ua)
xid = lkb->lkb_ua->xid;
}
seq_printf(s, "lkb %x %d %x %u %llu %x %x %d %d %d %d %d %d %u %llu %llu\n",
lkb->lkb_id,
lkb->lkb_nodeid,
lkb->lkb_remid,
lkb->lkb_ownpid,
(unsigned long long)xid,
lkb->lkb_exflags,
lkb->lkb_flags,
lkb->lkb_status,
lkb->lkb_grmode,
lkb->lkb_rqmode,
lkb->lkb_highbast,
rsb_lookup,
lkb->lkb_wait_type,
lkb->lkb_lvbseq,
(unsigned long long)ktime_to_ns(lkb->lkb_timestamp),
(unsigned long long)ktime_to_ns(lkb->lkb_time_bast));
}
static int print_format3(struct dlm_rsb *r, struct seq_file *s)
{
struct dlm_lkb *lkb;
int i, lvblen = r->res_ls->ls_lvblen;
int print_name = 1;
lock_rsb(r);
seq_printf(s, "rsb %p %d %x %lx %d %d %u %d ",
r,
r->res_nodeid,
r->res_first_lkid,
r->res_flags,
!list_empty(&r->res_root_list),
!list_empty(&r->res_recover_list),
r->res_recover_locks_count,
r->res_length);
for (i = 0; i < r->res_length; i++) {
if (!isascii(r->res_name[i]) || !isprint(r->res_name[i]))
print_name = 0;
}
seq_printf(s, "%s", print_name ? "str " : "hex");
for (i = 0; i < r->res_length; i++) {
if (print_name)
seq_printf(s, "%c", r->res_name[i]);
else
seq_printf(s, " %02x", (unsigned char)r->res_name[i]);
}
seq_printf(s, "\n");
if (!r->res_lvbptr)
goto do_locks;
seq_printf(s, "lvb %u %d", r->res_lvbseq, lvblen);
for (i = 0; i < lvblen; i++)
seq_printf(s, " %02x", (unsigned char)r->res_lvbptr[i]);
seq_printf(s, "\n");
do_locks:
list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue)
print_format3_lock(s, lkb, 0);
list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue)
print_format3_lock(s, lkb, 0);
list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue)
print_format3_lock(s, lkb, 0);
list_for_each_entry(lkb, &r->res_lookup, lkb_rsb_lookup)
print_format3_lock(s, lkb, 1);
unlock_rsb(r); unlock_rsb(r);
return 0; return 0;
...@@ -231,7 +320,7 @@ static int rsb_iter_next(struct rsb_iter *ri) ...@@ -231,7 +320,7 @@ static int rsb_iter_next(struct rsb_iter *ri)
break; break;
} }
read_unlock(&ls->ls_rsbtbl[i].lock); read_unlock(&ls->ls_rsbtbl[i].lock);
} }
ri->entry = i; ri->entry = i;
if (ri->entry >= ls->ls_rsbtbl_size) if (ri->entry >= ls->ls_rsbtbl_size)
...@@ -248,7 +337,7 @@ static int rsb_iter_next(struct rsb_iter *ri) ...@@ -248,7 +337,7 @@ static int rsb_iter_next(struct rsb_iter *ri)
read_unlock(&ls->ls_rsbtbl[i].lock); read_unlock(&ls->ls_rsbtbl[i].lock);
dlm_put_rsb(old); dlm_put_rsb(old);
goto top; goto top;
} }
ri->rsb = list_entry(ri->next, struct dlm_rsb, res_hashchain); ri->rsb = list_entry(ri->next, struct dlm_rsb, res_hashchain);
dlm_hold_rsb(ri->rsb); dlm_hold_rsb(ri->rsb);
read_unlock(&ls->ls_rsbtbl[i].lock); read_unlock(&ls->ls_rsbtbl[i].lock);
...@@ -274,6 +363,7 @@ static struct rsb_iter *rsb_iter_init(struct dlm_ls *ls) ...@@ -274,6 +363,7 @@ static struct rsb_iter *rsb_iter_init(struct dlm_ls *ls)
ri->ls = ls; ri->ls = ls;
ri->entry = 0; ri->entry = 0;
ri->next = NULL; ri->next = NULL;
ri->format = 1;
if (rsb_iter_next(ri)) { if (rsb_iter_next(ri)) {
rsb_iter_free(ri); rsb_iter_free(ri);
...@@ -325,16 +415,26 @@ static int rsb_seq_show(struct seq_file *file, void *iter_ptr) ...@@ -325,16 +415,26 @@ static int rsb_seq_show(struct seq_file *file, void *iter_ptr)
{ {
struct rsb_iter *ri = iter_ptr; struct rsb_iter *ri = iter_ptr;
if (ri->locks) { switch (ri->format) {
case 1:
print_format1(ri->rsb, file);
break;
case 2:
if (ri->header) { if (ri->header) {
seq_printf(file, "id nodeid remid pid xid exflags flags " seq_printf(file, "id nodeid remid pid xid exflags "
"sts grmode rqmode time_ms r_nodeid " "flags sts grmode rqmode time_ms "
"r_len r_name\n"); "r_nodeid r_len r_name\n");
ri->header = 0; ri->header = 0;
} }
print_locks(ri->rsb, file); print_format2(ri->rsb, file);
} else { break;
print_resource(ri->rsb, file); case 3:
if (ri->header) {
seq_printf(file, "version rsb 1.1 lvb 1.1 lkb 1.1\n");
ri->header = 0;
}
print_format3(ri->rsb, file);
break;
} }
return 0; return 0;
...@@ -385,7 +485,7 @@ static struct rsb_iter *locks_iter_init(struct dlm_ls *ls, loff_t *pos) ...@@ -385,7 +485,7 @@ static struct rsb_iter *locks_iter_init(struct dlm_ls *ls, loff_t *pos)
ri->ls = ls; ri->ls = ls;
ri->entry = 0; ri->entry = 0;
ri->next = NULL; ri->next = NULL;
ri->locks = 1; ri->format = 2;
if (*pos == 0) if (*pos == 0)
ri->header = 1; ri->header = 1;
...@@ -447,6 +547,84 @@ static const struct file_operations locks_fops = { ...@@ -447,6 +547,84 @@ static const struct file_operations locks_fops = {
.release = seq_release .release = seq_release
}; };
/*
* Dump all rsb/lvb/lkb state in compact listing, more complete than _locks
* This can replace both formats 1 and 2 eventually.
*/
static struct rsb_iter *all_iter_init(struct dlm_ls *ls, loff_t *pos)
{
struct rsb_iter *ri;
ri = kzalloc(sizeof *ri, GFP_KERNEL);
if (!ri)
return NULL;
ri->ls = ls;
ri->entry = 0;
ri->next = NULL;
ri->format = 3;
if (*pos == 0)
ri->header = 1;
if (rsb_iter_next(ri)) {
rsb_iter_free(ri);
return NULL;
}
return ri;
}
static void *all_seq_start(struct seq_file *file, loff_t *pos)
{
struct rsb_iter *ri;
loff_t n = *pos;
ri = all_iter_init(file->private, pos);
if (!ri)
return NULL;
while (n--) {
if (rsb_iter_next(ri)) {
rsb_iter_free(ri);
return NULL;
}
}
return ri;
}
static struct seq_operations all_seq_ops = {
.start = all_seq_start,
.next = rsb_seq_next,
.stop = rsb_seq_stop,
.show = rsb_seq_show,
};
static int all_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int ret;
ret = seq_open(file, &all_seq_ops);
if (ret)
return ret;
seq = file->private_data;
seq->private = inode->i_private;
return 0;
}
static const struct file_operations all_fops = {
.owner = THIS_MODULE,
.open = all_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release
};
/* /*
* dump lkb's on the ls_waiters list * dump lkb's on the ls_waiters list
*/ */
...@@ -489,30 +667,33 @@ static const struct file_operations waiters_fops = { ...@@ -489,30 +667,33 @@ static const struct file_operations waiters_fops = {
.read = waiters_read .read = waiters_read
}; };
void dlm_delete_debug_file(struct dlm_ls *ls)
{
if (ls->ls_debug_rsb_dentry)
debugfs_remove(ls->ls_debug_rsb_dentry);
if (ls->ls_debug_waiters_dentry)
debugfs_remove(ls->ls_debug_waiters_dentry);
if (ls->ls_debug_locks_dentry)
debugfs_remove(ls->ls_debug_locks_dentry);
if (ls->ls_debug_all_dentry)
debugfs_remove(ls->ls_debug_all_dentry);
}
int dlm_create_debug_file(struct dlm_ls *ls) int dlm_create_debug_file(struct dlm_ls *ls)
{ {
char name[DLM_LOCKSPACE_LEN+8]; char name[DLM_LOCKSPACE_LEN+8];
/* format 1 */
ls->ls_debug_rsb_dentry = debugfs_create_file(ls->ls_name, ls->ls_debug_rsb_dentry = debugfs_create_file(ls->ls_name,
S_IFREG | S_IRUGO, S_IFREG | S_IRUGO,
dlm_root, dlm_root,
ls, ls,
&rsb_fops); &rsb_fops);
if (!ls->ls_debug_rsb_dentry) if (!ls->ls_debug_rsb_dentry)
return -ENOMEM; goto fail;
memset(name, 0, sizeof(name)); /* format 2 */
snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_waiters", ls->ls_name);
ls->ls_debug_waiters_dentry = debugfs_create_file(name,
S_IFREG | S_IRUGO,
dlm_root,
ls,
&waiters_fops);
if (!ls->ls_debug_waiters_dentry) {
debugfs_remove(ls->ls_debug_rsb_dentry);
return -ENOMEM;
}
memset(name, 0, sizeof(name)); memset(name, 0, sizeof(name));
snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_locks", ls->ls_name); snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_locks", ls->ls_name);
...@@ -522,23 +703,38 @@ int dlm_create_debug_file(struct dlm_ls *ls) ...@@ -522,23 +703,38 @@ int dlm_create_debug_file(struct dlm_ls *ls)
dlm_root, dlm_root,
ls, ls,
&locks_fops); &locks_fops);
if (!ls->ls_debug_locks_dentry) { if (!ls->ls_debug_locks_dentry)
debugfs_remove(ls->ls_debug_waiters_dentry); goto fail;
debugfs_remove(ls->ls_debug_rsb_dentry);
return -ENOMEM; /* format 3 */
}
memset(name, 0, sizeof(name));
snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_all", ls->ls_name);
ls->ls_debug_all_dentry = debugfs_create_file(name,
S_IFREG | S_IRUGO,
dlm_root,
ls,
&all_fops);
if (!ls->ls_debug_all_dentry)
goto fail;
memset(name, 0, sizeof(name));
snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_waiters", ls->ls_name);
ls->ls_debug_waiters_dentry = debugfs_create_file(name,
S_IFREG | S_IRUGO,
dlm_root,
ls,
&waiters_fops);
if (!ls->ls_debug_waiters_dentry)
goto fail;
return 0; return 0;
}
void dlm_delete_debug_file(struct dlm_ls *ls) fail:
{ dlm_delete_debug_file(ls);
if (ls->ls_debug_rsb_dentry) return -ENOMEM;
debugfs_remove(ls->ls_debug_rsb_dentry);
if (ls->ls_debug_waiters_dentry)
debugfs_remove(ls->ls_debug_waiters_dentry);
if (ls->ls_debug_locks_dentry)
debugfs_remove(ls->ls_debug_locks_dentry);
} }
int __init dlm_register_debugfs(void) int __init dlm_register_debugfs(void)
......
...@@ -374,7 +374,7 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen, ...@@ -374,7 +374,7 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen,
struct list_head *list; struct list_head *list;
struct dlm_rsb *r; struct dlm_rsb *r;
int offset = 0, dir_nodeid; int offset = 0, dir_nodeid;
uint16_t be_namelen; __be16 be_namelen;
down_read(&ls->ls_root_sem); down_read(&ls->ls_root_sem);
...@@ -410,15 +410,15 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen, ...@@ -410,15 +410,15 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen,
if (offset + sizeof(uint16_t)*2 + r->res_length > outlen) { if (offset + sizeof(uint16_t)*2 + r->res_length > outlen) {
/* Write end-of-block record */ /* Write end-of-block record */
be_namelen = 0; be_namelen = cpu_to_be16(0);
memcpy(outbuf + offset, &be_namelen, sizeof(uint16_t)); memcpy(outbuf + offset, &be_namelen, sizeof(__be16));
offset += sizeof(uint16_t); offset += sizeof(__be16);
goto out; goto out;
} }
be_namelen = cpu_to_be16(r->res_length); be_namelen = cpu_to_be16(r->res_length);
memcpy(outbuf + offset, &be_namelen, sizeof(uint16_t)); memcpy(outbuf + offset, &be_namelen, sizeof(__be16));
offset += sizeof(uint16_t); offset += sizeof(__be16);
memcpy(outbuf + offset, r->res_name, r->res_length); memcpy(outbuf + offset, r->res_name, r->res_length);
offset += r->res_length; offset += r->res_length;
} }
...@@ -430,9 +430,9 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen, ...@@ -430,9 +430,9 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen,
if ((list == &ls->ls_root_list) && if ((list == &ls->ls_root_list) &&
(offset + sizeof(uint16_t) <= outlen)) { (offset + sizeof(uint16_t) <= outlen)) {
be_namelen = 0xFFFF; be_namelen = cpu_to_be16(0xFFFF);
memcpy(outbuf + offset, &be_namelen, sizeof(uint16_t)); memcpy(outbuf + offset, &be_namelen, sizeof(__be16));
offset += sizeof(uint16_t); offset += sizeof(__be16);
} }
out: out:
......
...@@ -245,7 +245,8 @@ struct dlm_lkb { ...@@ -245,7 +245,8 @@ struct dlm_lkb {
struct list_head lkb_astqueue; /* need ast to be sent */ struct list_head lkb_astqueue; /* need ast to be sent */
struct list_head lkb_ownqueue; /* list of locks for a process */ struct list_head lkb_ownqueue; /* list of locks for a process */
struct list_head lkb_time_list; struct list_head lkb_time_list;
unsigned long lkb_timestamp; ktime_t lkb_time_bast; /* for debugging */
ktime_t lkb_timestamp;
unsigned long lkb_timeout_cs; unsigned long lkb_timeout_cs;
char *lkb_lvbptr; char *lkb_lvbptr;
...@@ -481,6 +482,7 @@ struct dlm_ls { ...@@ -481,6 +482,7 @@ struct dlm_ls {
struct dentry *ls_debug_rsb_dentry; /* debugfs */ struct dentry *ls_debug_rsb_dentry; /* debugfs */
struct dentry *ls_debug_waiters_dentry; /* debugfs */ struct dentry *ls_debug_waiters_dentry; /* debugfs */
struct dentry *ls_debug_locks_dentry; /* debugfs */ struct dentry *ls_debug_locks_dentry; /* debugfs */
struct dentry *ls_debug_all_dentry; /* debugfs */
wait_queue_head_t ls_uevent_wait; /* user part of join/leave */ wait_queue_head_t ls_uevent_wait; /* user part of join/leave */
int ls_uevent_result; int ls_uevent_result;
......
...@@ -307,7 +307,7 @@ static void queue_cast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rv) ...@@ -307,7 +307,7 @@ static void queue_cast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rv)
lkb->lkb_lksb->sb_status = rv; lkb->lkb_lksb->sb_status = rv;
lkb->lkb_lksb->sb_flags = lkb->lkb_sbflags; lkb->lkb_lksb->sb_flags = lkb->lkb_sbflags;
dlm_add_ast(lkb, AST_COMP); dlm_add_ast(lkb, AST_COMP, 0);
} }
static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb) static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb)
...@@ -318,12 +318,12 @@ static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb) ...@@ -318,12 +318,12 @@ static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb)
static void queue_bast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rqmode) static void queue_bast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rqmode)
{ {
lkb->lkb_time_bast = ktime_get();
if (is_master_copy(lkb)) if (is_master_copy(lkb))
send_bast(r, lkb, rqmode); send_bast(r, lkb, rqmode);
else { else
lkb->lkb_bastmode = rqmode; dlm_add_ast(lkb, AST_BAST, rqmode);
dlm_add_ast(lkb, AST_BAST);
}
} }
/* /*
...@@ -744,6 +744,8 @@ static void add_lkb(struct dlm_rsb *r, struct dlm_lkb *lkb, int status) ...@@ -744,6 +744,8 @@ static void add_lkb(struct dlm_rsb *r, struct dlm_lkb *lkb, int status)
DLM_ASSERT(!lkb->lkb_status, dlm_print_lkb(lkb);); DLM_ASSERT(!lkb->lkb_status, dlm_print_lkb(lkb););
lkb->lkb_timestamp = ktime_get();
lkb->lkb_status = status; lkb->lkb_status = status;
switch (status) { switch (status) {
...@@ -1013,10 +1015,8 @@ static void add_timeout(struct dlm_lkb *lkb) ...@@ -1013,10 +1015,8 @@ static void add_timeout(struct dlm_lkb *lkb)
{ {
struct dlm_ls *ls = lkb->lkb_resource->res_ls; struct dlm_ls *ls = lkb->lkb_resource->res_ls;
if (is_master_copy(lkb)) { if (is_master_copy(lkb))
lkb->lkb_timestamp = jiffies;
return; return;
}
if (test_bit(LSFL_TIMEWARN, &ls->ls_flags) && if (test_bit(LSFL_TIMEWARN, &ls->ls_flags) &&
!(lkb->lkb_exflags & DLM_LKF_NODLCKWT)) { !(lkb->lkb_exflags & DLM_LKF_NODLCKWT)) {
...@@ -1031,7 +1031,6 @@ static void add_timeout(struct dlm_lkb *lkb) ...@@ -1031,7 +1031,6 @@ static void add_timeout(struct dlm_lkb *lkb)
DLM_ASSERT(list_empty(&lkb->lkb_time_list), dlm_print_lkb(lkb);); DLM_ASSERT(list_empty(&lkb->lkb_time_list), dlm_print_lkb(lkb););
mutex_lock(&ls->ls_timeout_mutex); mutex_lock(&ls->ls_timeout_mutex);
hold_lkb(lkb); hold_lkb(lkb);
lkb->lkb_timestamp = jiffies;
list_add_tail(&lkb->lkb_time_list, &ls->ls_timeout); list_add_tail(&lkb->lkb_time_list, &ls->ls_timeout);
mutex_unlock(&ls->ls_timeout_mutex); mutex_unlock(&ls->ls_timeout_mutex);
} }
...@@ -1059,6 +1058,7 @@ void dlm_scan_timeout(struct dlm_ls *ls) ...@@ -1059,6 +1058,7 @@ void dlm_scan_timeout(struct dlm_ls *ls)
struct dlm_rsb *r; struct dlm_rsb *r;
struct dlm_lkb *lkb; struct dlm_lkb *lkb;
int do_cancel, do_warn; int do_cancel, do_warn;
s64 wait_us;
for (;;) { for (;;) {
if (dlm_locking_stopped(ls)) if (dlm_locking_stopped(ls))
...@@ -1069,14 +1069,15 @@ void dlm_scan_timeout(struct dlm_ls *ls) ...@@ -1069,14 +1069,15 @@ void dlm_scan_timeout(struct dlm_ls *ls)
mutex_lock(&ls->ls_timeout_mutex); mutex_lock(&ls->ls_timeout_mutex);
list_for_each_entry(lkb, &ls->ls_timeout, lkb_time_list) { list_for_each_entry(lkb, &ls->ls_timeout, lkb_time_list) {
wait_us = ktime_to_us(ktime_sub(ktime_get(),
lkb->lkb_timestamp));
if ((lkb->lkb_exflags & DLM_LKF_TIMEOUT) && if ((lkb->lkb_exflags & DLM_LKF_TIMEOUT) &&
time_after_eq(jiffies, lkb->lkb_timestamp + wait_us >= (lkb->lkb_timeout_cs * 10000))
lkb->lkb_timeout_cs * HZ/100))
do_cancel = 1; do_cancel = 1;
if ((lkb->lkb_flags & DLM_IFL_WATCH_TIMEWARN) && if ((lkb->lkb_flags & DLM_IFL_WATCH_TIMEWARN) &&
time_after_eq(jiffies, lkb->lkb_timestamp + wait_us >= dlm_config.ci_timewarn_cs * 10000)
dlm_config.ci_timewarn_cs * HZ/100))
do_warn = 1; do_warn = 1;
if (!do_cancel && !do_warn) if (!do_cancel && !do_warn)
...@@ -1122,12 +1123,12 @@ void dlm_scan_timeout(struct dlm_ls *ls) ...@@ -1122,12 +1123,12 @@ void dlm_scan_timeout(struct dlm_ls *ls)
void dlm_adjust_timeouts(struct dlm_ls *ls) void dlm_adjust_timeouts(struct dlm_ls *ls)
{ {
struct dlm_lkb *lkb; struct dlm_lkb *lkb;
long adj = jiffies - ls->ls_recover_begin; u64 adj_us = jiffies_to_usecs(jiffies - ls->ls_recover_begin);
ls->ls_recover_begin = 0; ls->ls_recover_begin = 0;
mutex_lock(&ls->ls_timeout_mutex); mutex_lock(&ls->ls_timeout_mutex);
list_for_each_entry(lkb, &ls->ls_timeout, lkb_time_list) list_for_each_entry(lkb, &ls->ls_timeout, lkb_time_list)
lkb->lkb_timestamp += adj; lkb->lkb_timestamp = ktime_add_us(lkb->lkb_timestamp, adj_us);
mutex_unlock(&ls->ls_timeout_mutex); mutex_unlock(&ls->ls_timeout_mutex);
} }
......
...@@ -295,6 +295,7 @@ static int add_sock(struct socket *sock, struct connection *con) ...@@ -295,6 +295,7 @@ static int add_sock(struct socket *sock, struct connection *con)
con->sock->sk->sk_write_space = lowcomms_write_space; con->sock->sk->sk_write_space = lowcomms_write_space;
con->sock->sk->sk_state_change = lowcomms_state_change; con->sock->sk->sk_state_change = lowcomms_state_change;
con->sock->sk->sk_user_data = con; con->sock->sk->sk_user_data = con;
con->sock->sk->sk_allocation = GFP_NOFS;
return 0; return 0;
} }
...@@ -823,7 +824,6 @@ static void sctp_init_assoc(struct connection *con) ...@@ -823,7 +824,6 @@ static void sctp_init_assoc(struct connection *con)
len = e->len; len = e->len;
offset = e->offset; offset = e->offset;
spin_unlock(&con->writequeue_lock); spin_unlock(&con->writequeue_lock);
kmap(e->page);
/* Send the first block off the write queue */ /* Send the first block off the write queue */
iov[0].iov_base = page_address(e->page)+offset; iov[0].iov_base = page_address(e->page)+offset;
...@@ -854,7 +854,6 @@ static void sctp_init_assoc(struct connection *con) ...@@ -854,7 +854,6 @@ static void sctp_init_assoc(struct connection *con)
if (e->len == 0 && e->users == 0) { if (e->len == 0 && e->users == 0) {
list_del(&e->list); list_del(&e->list);
kunmap(e->page);
free_entry(e); free_entry(e);
} }
spin_unlock(&con->writequeue_lock); spin_unlock(&con->writequeue_lock);
...@@ -1203,8 +1202,6 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc) ...@@ -1203,8 +1202,6 @@ void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc)
if (e) { if (e) {
got_one: got_one:
if (users == 0)
kmap(e->page);
*ppc = page_address(e->page) + offset; *ppc = page_address(e->page) + offset;
return e; return e;
} }
...@@ -1233,7 +1230,6 @@ void dlm_lowcomms_commit_buffer(void *mh) ...@@ -1233,7 +1230,6 @@ void dlm_lowcomms_commit_buffer(void *mh)
if (users) if (users)
goto out; goto out;
e->len = e->end - e->offset; e->len = e->end - e->offset;
kunmap(e->page);
spin_unlock(&con->writequeue_lock); spin_unlock(&con->writequeue_lock);
if (!test_and_set_bit(CF_WRITE_PENDING, &con->flags)) { if (!test_and_set_bit(CF_WRITE_PENDING, &con->flags)) {
...@@ -1272,7 +1268,6 @@ static void send_to_sock(struct connection *con) ...@@ -1272,7 +1268,6 @@ static void send_to_sock(struct connection *con)
offset = e->offset; offset = e->offset;
BUG_ON(len == 0 && e->users == 0); BUG_ON(len == 0 && e->users == 0);
spin_unlock(&con->writequeue_lock); spin_unlock(&con->writequeue_lock);
kmap(e->page);
ret = 0; ret = 0;
if (len) { if (len) {
...@@ -1294,7 +1289,6 @@ static void send_to_sock(struct connection *con) ...@@ -1294,7 +1289,6 @@ static void send_to_sock(struct connection *con)
if (e->len == 0 && e->users == 0) { if (e->len == 0 && e->users == 0) {
list_del(&e->list); list_del(&e->list);
kunmap(e->page);
free_entry(e); free_entry(e);
continue; continue;
} }
......
...@@ -39,7 +39,7 @@ char *dlm_allocate_lvb(struct dlm_ls *ls) ...@@ -39,7 +39,7 @@ char *dlm_allocate_lvb(struct dlm_ls *ls)
{ {
char *p; char *p;
p = kzalloc(ls->ls_lvblen, GFP_KERNEL); p = kzalloc(ls->ls_lvblen, ls->ls_allocation);
return p; return p;
} }
...@@ -57,7 +57,7 @@ struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls, int namelen) ...@@ -57,7 +57,7 @@ struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls, int namelen)
DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,); DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,);
r = kzalloc(sizeof(*r) + namelen, GFP_KERNEL); r = kzalloc(sizeof(*r) + namelen, ls->ls_allocation);
return r; return r;
} }
...@@ -72,7 +72,7 @@ struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls) ...@@ -72,7 +72,7 @@ struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
{ {
struct dlm_lkb *lkb; struct dlm_lkb *lkb;
lkb = kmem_cache_zalloc(lkb_cache, GFP_KERNEL); lkb = kmem_cache_zalloc(lkb_cache, ls->ls_allocation);
return lkb; return lkb;
} }
......
...@@ -112,7 +112,7 @@ int dlm_process_incoming_buffer(int nodeid, const void *base, ...@@ -112,7 +112,7 @@ int dlm_process_incoming_buffer(int nodeid, const void *base,
ordinary messages). */ ordinary messages). */
if (msglen > sizeof(__tmp) && p == &__tmp.p) { if (msglen > sizeof(__tmp) && p == &__tmp.p) {
p = kmalloc(dlm_config.ci_buffer_size, GFP_KERNEL); p = kmalloc(dlm_config.ci_buffer_size, GFP_NOFS);
if (p == NULL) if (p == NULL)
return ret; return ret;
} }
......
...@@ -115,7 +115,6 @@ static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb) ...@@ -115,7 +115,6 @@ static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb)
data->status = lkb->lkb_status; data->status = lkb->lkb_status;
data->grmode = lkb->lkb_grmode; data->grmode = lkb->lkb_grmode;
data->rqmode = lkb->lkb_rqmode; data->rqmode = lkb->lkb_rqmode;
data->timestamp = lkb->lkb_timestamp;
if (lkb->lkb_ua) if (lkb->lkb_ua)
data->xid = lkb->lkb_ua->xid; data->xid = lkb->lkb_ua->xid;
if (r) { if (r) {
......
...@@ -175,7 +175,7 @@ static int lkb_is_endoflife(struct dlm_lkb *lkb, int sb_status, int type) ...@@ -175,7 +175,7 @@ static int lkb_is_endoflife(struct dlm_lkb *lkb, int sb_status, int type)
/* we could possibly check if the cancel of an orphan has resulted in the lkb /* we could possibly check if the cancel of an orphan has resulted in the lkb
being removed and then remove that lkb from the orphans list and free it */ being removed and then remove that lkb from the orphans list and free it */
void dlm_user_add_ast(struct dlm_lkb *lkb, int type) void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
{ {
struct dlm_ls *ls; struct dlm_ls *ls;
struct dlm_user_args *ua; struct dlm_user_args *ua;
...@@ -208,6 +208,8 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type) ...@@ -208,6 +208,8 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
ast_type = lkb->lkb_ast_type; ast_type = lkb->lkb_ast_type;
lkb->lkb_ast_type |= type; lkb->lkb_ast_type |= type;
if (bastmode)
lkb->lkb_bastmode = bastmode;
if (!ast_type) { if (!ast_type) {
kref_get(&lkb->lkb_ref); kref_get(&lkb->lkb_ref);
......
...@@ -9,7 +9,7 @@ ...@@ -9,7 +9,7 @@
#ifndef __USER_DOT_H__ #ifndef __USER_DOT_H__
#define __USER_DOT_H__ #define __USER_DOT_H__
void dlm_user_add_ast(struct dlm_lkb *lkb, int type); void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int bastmode);
int dlm_user_init(void); int dlm_user_init(void);
void dlm_user_exit(void); void dlm_user_exit(void);
int dlm_device_deregister(struct dlm_ls *ls); int dlm_device_deregister(struct dlm_ls *ls);
......
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