/*
* Copyright (C) International Business Machines Corp., 2000-2002
* Portions Copyright (C) Christoph Hellwig, 2001-2002
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _H_JFS_DEBUG
#define _H_JFS_DEBUG
/*
* jfs_debug.h
*
* global debug message, data structure/macro definitions
* under control of CONFIG_JFS_DEBUG, CONFIG_JFS_STATISTICS;
*/
/*
* Create /proc/fs/jfs if procfs is enabled andeither
* CONFIG_JFS_DEBUG or CONFIG_JFS_STATISTICS is defined
*/
#if defined(CONFIG_PROC_FS) && (defined(CONFIG_JFS_DEBUG) || defined(CONFIG_JFS_STATISTICS))
#define PROC_FS_JFS
extern void jfs_proc_init(void);
extern void jfs_proc_clean(void);
#endif
/*
* assert with traditional printf/panic
*/
#define assert(p) do { \
if (!(p)) { \
printk(KERN_CRIT "BUG at %s:%d assert(%s)\n", \
__FILE__, __LINE__, #p); \
BUG(); \
} \
} while (0)
/*
* debug ON
* --------
*/
#ifdef CONFIG_JFS_DEBUG
#define ASSERT(p) assert(p)
/* printk verbosity */
#define JFS_LOGLEVEL_ERR 1
#define JFS_LOGLEVEL_WARN 2
#define JFS_LOGLEVEL_DEBUG 3
#define JFS_LOGLEVEL_INFO 4
extern int jfsloglevel;
extern const struct file_operations jfs_txanchor_proc_fops;
/* information message: e.g., configuration, major event */
#define jfs_info(fmt, arg...) do { \
if (jfsloglevel >= JFS_LOGLEVEL_INFO) \
printk(KERN_INFO fmt "\n", ## arg); \
} while (0)
/* debug message: ad hoc */
#define jfs_debug(fmt, arg...) do { \
if (jfsloglevel >= JFS_LOGLEVEL_DEBUG) \
printk(KERN_DEBUG fmt "\n", ## arg); \
} while (0)
/* warn message: */
#define jfs_warn(fmt, arg...) do { \
if (jfsloglevel >= JFS_LOGLEVEL_WARN) \
printk(KERN_WARNING fmt "\n", ## arg); \
} while (0)
/* error event message: e.g., i/o error */
#define jfs_err(fmt, arg...) do { \
if (jfsloglevel >= JFS_LOGLEVEL_ERR) \
printk(KERN_ERR fmt "\n", ## arg); \
} while (0)
/*
* debug OFF
* ---------
*/
#else /* CONFIG_JFS_DEBUG */
#define ASSERT(p) do {} while (0)
#define jfs_info(fmt, arg...) do {} while (0)
#define jfs_debug(fmt, arg...) do {} while (0)
#define jfs_warn(fmt, arg...) do {} while (0)
#define jfs_err(fmt, arg...) do {} while (0)
#endif /* CONFIG_JFS_DEBUG */
/*
* statistics
* ----------
*/
#ifdef CONFIG_JFS_STATISTICS
extern const struct file_operations jfs_lmstats_proc_fops;
extern const struct file_operations jfs_txstats_proc_fops;
extern const struct file_operations jfs_mpstat_proc_fops;
extern const struct file_operations jfs_xtstat_proc_fops;
#define INCREMENT(x) ((x)++)
#define DECREMENT(x) ((x)--)
#define HIGHWATERMARK(x,y) ((x) = max((x), (y)))
#else
#define INCREMENT(x)
#define DECREMENT(x)
#define HIGHWATERMARK(x,y)
#endif /* CONFIG_JFS_STATISTICS */
#endif /* _H_JFS_DEBUG */
4759d386d55fef452d692bf101167914437e848e'/>
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull DAX updates from Dan Williams:
"The completion of Jan's DAX work for 4.10.
As I mentioned in the libnvdimm-for-4.10 pull request, these are some
final fixes for the DAX dirty-cacheline-tracking invalidation work
that was merged through the -mm, ext4, and xfs trees in -rc1. These
patches were prepared prior to the merge window, but we waited for
4.10-rc1 to have a stable merge base after all the prerequisites were
merged.
Quoting Jan on the overall changes in these patches:
"So I'd like all these 6 patches to go for rc2. The first three
patches fix invalidation of exceptional DAX entries (a bug which
is there for a long time) - without these patches data loss can
occur on power failure even though user called fsync(2). The other
three patches change locking of DAX faults so that ->iomap_begin()
is called in a more relaxed locking context and we are safe to
start a transaction there for ext4"
These have received a build success notification from the kbuild
robot, and pass the latest libnvdimm unit tests. There have not been
any -next releases since -rc1, so they have not appeared there"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
ext4: Simplify DAX fault path
dax: Call ->iomap_begin without entry lock during dax fault
dax: Finish fault completely when loading holes
dax: Avoid page invalidation races and unnecessary radix tree traversals
mm: Invalidate DAX radix tree entries only if appropriate
ext2: Return BH_New buffers for zeroed blocks