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提交 88ed806a 编写于 作者: L Linus Torvalds
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Merge tag 'md/3.18' of git://neil.brown.name/md 

Pull md updates from Neil Brown:
 - a few minor bug fixes
 - quite a lot of code tidy-up and simplification
 - remove PRINT_RAID_DEBUG ioctl.  I'm fairly sure it is unused, and it
   isn't particularly useful.

* tag 'md/3.18' of git://neil.brown.name/md: (21 commits)
  lib/raid6: Add log level to printks
  md: move EXPORT_SYMBOL to after function in md.c
  md: discard PRINT_RAID_DEBUG ioctl
  md: remove MD_BUG()
  md: clean up 'exit' labels in md_ioctl().
  md: remove unnecessary test for MD_MAJOR in md_ioctl()
  md: don't allow "-sync" to be set for device in an active array.
  md: remove unwanted white space from md.c
  md: don't start resync thread directly from md thread.
  md: Just use RCU when checking for overlap between arrays.
  md: avoid potential long delay under pers_lock
  md: simplify export_array()
  md: discard find_rdev_nr in favour of find_rdev_nr_rcu
  md: use wait_event() to simplify md_super_wait()
  md: be more relaxed about stopping an array which isn't started.
  md/raid1: process_checks doesn't use its return value.
  md/raid5: fix init_stripe() inconsistencies
  md/raid10: another memory leak due to reshape.
  md: use set_bit/clear_bit instead of shift/mask for bi_flags changes.
  md/raid1: minor typos and reformatting.
  ...
上级 e56d9fcc b395f75e
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Showing with 266 addition and 533 deletion
drivers/md/bitmap.c
浏览文件 @ 88ed806a
...@@ -879,7 +879,6 @@ void bitmap_unplug(struct bitmap *bitmap) ...@@ -879,7 +879,6 @@ void bitmap_unplug(struct bitmap *bitmap)
{ {
unsigned long i; unsigned long i;
int dirty, need_write; int dirty, need_write;
int wait = 0;
if (!bitmap || !bitmap->storage.filemap || if (!bitmap || !bitmap->storage.filemap ||
test_bit(BITMAP_STALE, &bitmap->flags)) test_bit(BITMAP_STALE, &bitmap->flags))
...@@ -897,16 +896,13 @@ void bitmap_unplug(struct bitmap *bitmap) ...@@ -897,16 +896,13 @@ void bitmap_unplug(struct bitmap *bitmap)
clear_page_attr(bitmap, i, BITMAP_PAGE_PENDING); clear_page_attr(bitmap, i, BITMAP_PAGE_PENDING);
write_page(bitmap, bitmap->storage.filemap[i], 0); write_page(bitmap, bitmap->storage.filemap[i], 0);
} }
if (dirty)
wait = 1;
}
if (wait) { /* if any writes were performed, we need to wait on them */
if (bitmap->storage.file)
wait_event(bitmap->write_wait,
atomic_read(&bitmap->pending_writes)==0);
else
md_super_wait(bitmap->mddev);
} }
if (bitmap->storage.file)
wait_event(bitmap->write_wait,
atomic_read(&bitmap->pending_writes)==0);
else
md_super_wait(bitmap->mddev);
if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags)) if (test_bit(BITMAP_WRITE_ERROR, &bitmap->flags))
bitmap_file_kick(bitmap); bitmap_file_kick(bitmap);
} }
......
drivers/md/linear.c
浏览文件 @ 88ed806a
...@@ -10,10 +10,10 @@ ...@@ -10,10 +10,10 @@
it under the terms of the GNU General Public License as published by it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option) the Free Software Foundation; either version 2, or (at your option)
any later version. any later version.
You should have received a copy of the GNU General Public License You should have received a copy of the GNU General Public License
(for example /usr/src/linux/COPYING); if not, write to the Free (for example /usr/src/linux/COPYING); if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#include <linux/blkdev.h> #include <linux/blkdev.h>
...@@ -25,7 +25,7 @@ ...@@ -25,7 +25,7 @@
#include "linear.h" #include "linear.h"
/* /*
* find which device holds a particular offset * find which device holds a particular offset
*/ */
static inline struct dev_info *which_dev(struct mddev *mddev, sector_t sector) static inline struct dev_info *which_dev(struct mddev *mddev, sector_t sector)
{ {
...@@ -355,7 +355,6 @@ static void linear_status (struct seq_file *seq, struct mddev *mddev) ...@@ -355,7 +355,6 @@ static void linear_status (struct seq_file *seq, struct mddev *mddev)
seq_printf(seq, " %dk rounding", mddev->chunk_sectors / 2); seq_printf(seq, " %dk rounding", mddev->chunk_sectors / 2);
} }
static struct md_personality linear_personality = static struct md_personality linear_personality =
{ {
.name = "linear", .name = "linear",
...@@ -379,7 +378,6 @@ static void linear_exit (void) ...@@ -379,7 +378,6 @@ static void linear_exit (void)
unregister_md_personality (&linear_personality); unregister_md_personality (&linear_personality);
} }
module_init(linear_init); module_init(linear_init);
module_exit(linear_exit); module_exit(linear_exit);
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
......
drivers/md/md.c
浏览文件 @ 88ed806a
此差异已折叠。
drivers/md/md.h
浏览文件 @ 88ed806a
/* /*
md.h : kernel internal structure of the Linux MD driver md.h : kernel internal structure of the Linux MD driver
Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
This program is free software; you can redistribute it and/or modify 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 it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option) the Free Software Foundation; either version 2, or (at your option)
any later version. any later version.
You should have received a copy of the GNU General Public License You should have received a copy of the GNU General Public License
(for example /usr/src/linux/COPYING); if not, write to the Free (for example /usr/src/linux/COPYING); if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#ifndef _MD_MD_H #ifndef _MD_MD_H
...@@ -56,7 +56,7 @@ struct md_rdev { ...@@ -56,7 +56,7 @@ struct md_rdev {
__u64 sb_events; __u64 sb_events;
sector_t data_offset; /* start of data in array */ sector_t data_offset; /* start of data in array */
sector_t new_data_offset;/* only relevant while reshaping */ sector_t new_data_offset;/* only relevant while reshaping */
sector_t sb_start; /* offset of the super block (in 512byte sectors) */ sector_t sb_start; /* offset of the super block (in 512byte sectors) */
int sb_size; /* bytes in the superblock */ int sb_size; /* bytes in the superblock */
int preferred_minor; /* autorun support */ int preferred_minor; /* autorun support */
...@@ -239,7 +239,7 @@ struct mddev { ...@@ -239,7 +239,7 @@ struct mddev {
minor_version, minor_version,
patch_version; patch_version;
int persistent; int persistent;
int external; /* metadata is int external; /* metadata is
* managed externally */ * managed externally */
char metadata_type[17]; /* externally set*/ char metadata_type[17]; /* externally set*/
int chunk_sectors; int chunk_sectors;
...@@ -248,7 +248,7 @@ struct mddev { ...@@ -248,7 +248,7 @@ struct mddev {
char clevel[16]; char clevel[16];
int raid_disks; int raid_disks;
int max_disks; int max_disks;
sector_t dev_sectors; /* used size of sector_t dev_sectors; /* used size of
* component devices */ * component devices */
sector_t array_sectors; /* exported array size */ sector_t array_sectors; /* exported array size */
int external_size; /* size managed int external_size; /* size managed
...@@ -312,7 +312,7 @@ struct mddev { ...@@ -312,7 +312,7 @@ struct mddev {
int parallel_resync; int parallel_resync;
int ok_start_degraded; int ok_start_degraded;
/* recovery/resync flags /* recovery/resync flags
* NEEDED: we might need to start a resync/recover * NEEDED: we might need to start a resync/recover
* RUNNING: a thread is running, or about to be started * RUNNING: a thread is running, or about to be started
* SYNC: actually doing a resync, not a recovery * SYNC: actually doing a resync, not a recovery
...@@ -392,20 +392,20 @@ struct mddev { ...@@ -392,20 +392,20 @@ struct mddev {
unsigned int safemode; /* if set, update "clean" superblock unsigned int safemode; /* if set, update "clean" superblock
* when no writes pending. * when no writes pending.
*/ */
unsigned int safemode_delay; unsigned int safemode_delay;
struct timer_list safemode_timer; struct timer_list safemode_timer;
atomic_t writes_pending; atomic_t writes_pending;
struct request_queue *queue; /* for plugging ... */ struct request_queue *queue; /* for plugging ... */
struct bitmap *bitmap; /* the bitmap for the device */ struct bitmap *bitmap; /* the bitmap for the device */
struct { struct {
struct file *file; /* the bitmap file */ struct file *file; /* the bitmap file */
loff_t offset; /* offset from superblock of loff_t offset; /* offset from superblock of
* start of bitmap. May be * start of bitmap. May be
* negative, but not '0' * negative, but not '0'
* For external metadata, offset * For external metadata, offset
* from start of device. * from start of device.
*/ */
unsigned long space; /* space available at this offset */ unsigned long space; /* space available at this offset */
loff_t default_offset; /* this is the offset to use when loff_t default_offset; /* this is the offset to use when
...@@ -421,7 +421,7 @@ struct mddev { ...@@ -421,7 +421,7 @@ struct mddev {
int external; int external;
} bitmap_info; } bitmap_info;
atomic_t max_corr_read_errors; /* max read retries */ atomic_t max_corr_read_errors; /* max read retries */
struct list_head all_mddevs; struct list_head all_mddevs;
struct attribute_group *to_remove; struct attribute_group *to_remove;
...@@ -439,7 +439,6 @@ struct mddev { ...@@ -439,7 +439,6 @@ struct mddev {
void (*sync_super)(struct mddev *mddev, struct md_rdev *rdev); void (*sync_super)(struct mddev *mddev, struct md_rdev *rdev);
}; };
static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev) static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)
{ {
int faulty = test_bit(Faulty, &rdev->flags); int faulty = test_bit(Faulty, &rdev->flags);
...@@ -449,7 +448,7 @@ static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev) ...@@ -449,7 +448,7 @@ static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)
static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors) static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors)
{ {
atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io); atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
} }
struct md_personality struct md_personality
...@@ -463,7 +462,7 @@ struct md_personality ...@@ -463,7 +462,7 @@ struct md_personality
int (*stop)(struct mddev *mddev); int (*stop)(struct mddev *mddev);
void (*status)(struct seq_file *seq, struct mddev *mddev); void (*status)(struct seq_file *seq, struct mddev *mddev);
/* error_handler must set ->faulty and clear ->in_sync /* error_handler must set ->faulty and clear ->in_sync
* if appropriate, and should abort recovery if needed * if appropriate, and should abort recovery if needed
*/ */
void (*error_handler)(struct mddev *mddev, struct md_rdev *rdev); void (*error_handler)(struct mddev *mddev, struct md_rdev *rdev);
int (*hot_add_disk) (struct mddev *mddev, struct md_rdev *rdev); int (*hot_add_disk) (struct mddev *mddev, struct md_rdev *rdev);
...@@ -493,7 +492,6 @@ struct md_personality ...@@ -493,7 +492,6 @@ struct md_personality
void *(*takeover) (struct mddev *mddev); void *(*takeover) (struct mddev *mddev);
}; };
struct md_sysfs_entry { struct md_sysfs_entry {
struct attribute attr; struct attribute attr;
ssize_t (*show)(struct mddev *, char *); ssize_t (*show)(struct mddev *, char *);
...@@ -560,7 +558,7 @@ struct md_thread { ...@@ -560,7 +558,7 @@ struct md_thread {
void (*run) (struct md_thread *thread); void (*run) (struct md_thread *thread);
struct mddev *mddev; struct mddev *mddev;
wait_queue_head_t wqueue; wait_queue_head_t wqueue;
unsigned long flags; unsigned long flags;
struct task_struct *tsk; struct task_struct *tsk;
unsigned long timeout; unsigned long timeout;
void *private; void *private;
...@@ -594,7 +592,7 @@ extern void md_flush_request(struct mddev *mddev, struct bio *bio); ...@@ -594,7 +592,7 @@ extern void md_flush_request(struct mddev *mddev, struct bio *bio);
extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev, extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
sector_t sector, int size, struct page *page); sector_t sector, int size, struct page *page);
extern void md_super_wait(struct mddev *mddev); extern void md_super_wait(struct mddev *mddev);
extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size, extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
struct page *page, int rw, bool metadata_op); struct page *page, int rw, bool metadata_op);
extern void md_do_sync(struct md_thread *thread); extern void md_do_sync(struct md_thread *thread);
extern void md_new_event(struct mddev *mddev); extern void md_new_event(struct mddev *mddev);
......
drivers/md/multipath.c
浏览文件 @ 88ed806a
...@@ -31,13 +31,12 @@ ...@@ -31,13 +31,12 @@
#define NR_RESERVED_BUFS 32 #define NR_RESERVED_BUFS 32
static int multipath_map (struct mpconf *conf) static int multipath_map (struct mpconf *conf)
{ {
int i, disks = conf->raid_disks; int i, disks = conf->raid_disks;
/* /*
* Later we do read balancing on the read side * Later we do read balancing on the read side
* now we use the first available disk. * now we use the first available disk.
*/ */
...@@ -68,7 +67,6 @@ static void multipath_reschedule_retry (struct multipath_bh *mp_bh) ...@@ -68,7 +67,6 @@ static void multipath_reschedule_retry (struct multipath_bh *mp_bh)
md_wakeup_thread(mddev->thread); md_wakeup_thread(mddev->thread);
} }
/* /*
* multipath_end_bh_io() is called when we have finished servicing a multipathed * multipath_end_bh_io() is called when we have finished servicing a multipathed
* operation and are ready to return a success/failure code to the buffer * operation and are ready to return a success/failure code to the buffer
...@@ -98,8 +96,8 @@ static void multipath_end_request(struct bio *bio, int error) ...@@ -98,8 +96,8 @@ static void multipath_end_request(struct bio *bio, int error)
*/ */
char b[BDEVNAME_SIZE]; char b[BDEVNAME_SIZE];
md_error (mp_bh->mddev, rdev); md_error (mp_bh->mddev, rdev);
printk(KERN_ERR "multipath: %s: rescheduling sector %llu\n", printk(KERN_ERR "multipath: %s: rescheduling sector %llu\n",
bdevname(rdev->bdev,b), bdevname(rdev->bdev,b),
(unsigned long long)bio->bi_iter.bi_sector); (unsigned long long)bio->bi_iter.bi_sector);
multipath_reschedule_retry(mp_bh); multipath_reschedule_retry(mp_bh);
} else } else
...@@ -145,12 +143,12 @@ static void multipath_status (struct seq_file *seq, struct mddev *mddev) ...@@ -145,12 +143,12 @@ static void multipath_status (struct seq_file *seq, struct mddev *mddev)
{ {
struct mpconf *conf = mddev->private; struct mpconf *conf = mddev->private;
int i; int i;
seq_printf (seq, " [%d/%d] [", conf->raid_disks, seq_printf (seq, " [%d/%d] [", conf->raid_disks,
conf->raid_disks - mddev->degraded); conf->raid_disks - mddev->degraded);
for (i = 0; i < conf->raid_disks; i++) for (i = 0; i < conf->raid_disks; i++)
seq_printf (seq, "%s", seq_printf (seq, "%s",
conf->multipaths[i].rdev && conf->multipaths[i].rdev &&
test_bit(In_sync, &conf->multipaths[i].rdev->flags) ? "U" : "_"); test_bit(In_sync, &conf->multipaths[i].rdev->flags) ? "U" : "_");
seq_printf (seq, "]"); seq_printf (seq, "]");
} }
...@@ -195,7 +193,7 @@ static void multipath_error (struct mddev *mddev, struct md_rdev *rdev) ...@@ -195,7 +193,7 @@ static void multipath_error (struct mddev *mddev, struct md_rdev *rdev)
* first check if this is a queued request for a device * first check if this is a queued request for a device
* which has just failed. * which has just failed.
*/ */
printk(KERN_ALERT printk(KERN_ALERT
"multipath: only one IO path left and IO error.\n"); "multipath: only one IO path left and IO error.\n");
/* leave it active... it's all we have */ /* leave it active... it's all we have */
return; return;
...@@ -242,7 +240,6 @@ static void print_multipath_conf (struct mpconf *conf) ...@@ -242,7 +240,6 @@ static void print_multipath_conf (struct mpconf *conf)
} }
} }
static int multipath_add_disk(struct mddev *mddev, struct md_rdev *rdev) static int multipath_add_disk(struct mddev *mddev, struct md_rdev *rdev)
{ {
struct mpconf *conf = mddev->private; struct mpconf *conf = mddev->private;
...@@ -325,8 +322,6 @@ static int multipath_remove_disk(struct mddev *mddev, struct md_rdev *rdev) ...@@ -325,8 +322,6 @@ static int multipath_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
return err; return err;
} }
/* /*
* This is a kernel thread which: * This is a kernel thread which:
* *
...@@ -356,7 +351,7 @@ static void multipathd(struct md_thread *thread) ...@@ -356,7 +351,7 @@ static void multipathd(struct md_thread *thread)
bio = &mp_bh->bio; bio = &mp_bh->bio;
bio->bi_iter.bi_sector = mp_bh->master_bio->bi_iter.bi_sector; bio->bi_iter.bi_sector = mp_bh->master_bio->bi_iter.bi_sector;
if ((mp_bh->path = multipath_map (conf))<0) { if ((mp_bh->path = multipath_map (conf))<0) {
printk(KERN_ALERT "multipath: %s: unrecoverable IO read" printk(KERN_ALERT "multipath: %s: unrecoverable IO read"
" error for block %llu\n", " error for block %llu\n",
...@@ -414,7 +409,7 @@ static int multipath_run (struct mddev *mddev) ...@@ -414,7 +409,7 @@ static int multipath_run (struct mddev *mddev)
conf = kzalloc(sizeof(struct mpconf), GFP_KERNEL); conf = kzalloc(sizeof(struct mpconf), GFP_KERNEL);
mddev->private = conf; mddev->private = conf;
if (!conf) { if (!conf) {
printk(KERN_ERR printk(KERN_ERR
"multipath: couldn't allocate memory for %s\n", "multipath: couldn't allocate memory for %s\n",
mdname(mddev)); mdname(mddev));
goto out; goto out;
...@@ -423,7 +418,7 @@ static int multipath_run (struct mddev *mddev) ...@@ -423,7 +418,7 @@ static int multipath_run (struct mddev *mddev)
conf->multipaths = kzalloc(sizeof(struct multipath_info)*mddev->raid_disks, conf->multipaths = kzalloc(sizeof(struct multipath_info)*mddev->raid_disks,
GFP_KERNEL); GFP_KERNEL);
if (!conf->multipaths) { if (!conf->multipaths) {
printk(KERN_ERR printk(KERN_ERR
"multipath: couldn't allocate memory for %s\n", "multipath: couldn't allocate memory for %s\n",
mdname(mddev)); mdname(mddev));
goto out_free_conf; goto out_free_conf;
...@@ -469,7 +464,7 @@ static int multipath_run (struct mddev *mddev) ...@@ -469,7 +464,7 @@ static int multipath_run (struct mddev *mddev)
conf->pool = mempool_create_kmalloc_pool(NR_RESERVED_BUFS, conf->pool = mempool_create_kmalloc_pool(NR_RESERVED_BUFS,
sizeof(struct multipath_bh)); sizeof(struct multipath_bh));
if (conf->pool == NULL) { if (conf->pool == NULL) {
printk(KERN_ERR printk(KERN_ERR
"multipath: couldn't allocate memory for %s\n", "multipath: couldn't allocate memory for %s\n",
mdname(mddev)); mdname(mddev));
goto out_free_conf; goto out_free_conf;
...@@ -485,7 +480,7 @@ static int multipath_run (struct mddev *mddev) ...@@ -485,7 +480,7 @@ static int multipath_run (struct mddev *mddev)
} }
} }
printk(KERN_INFO printk(KERN_INFO
"multipath: array %s active with %d out of %d IO paths\n", "multipath: array %s active with %d out of %d IO paths\n",
mdname(mddev), conf->raid_disks - mddev->degraded, mdname(mddev), conf->raid_disks - mddev->degraded,
mddev->raid_disks); mddev->raid_disks);
...@@ -512,7 +507,6 @@ static int multipath_run (struct mddev *mddev) ...@@ -512,7 +507,6 @@ static int multipath_run (struct mddev *mddev)
return -EIO; return -EIO;
} }
static int multipath_stop (struct mddev *mddev) static int multipath_stop (struct mddev *mddev)
{ {
struct mpconf *conf = mddev->private; struct mpconf *conf = mddev->private;
......
drivers/md/raid0.c
浏览文件 @ 88ed806a
/* /*
raid0.c : Multiple Devices driver for Linux raid0.c : Multiple Devices driver for Linux
Copyright (C) 1994-96 Marc ZYNGIER Copyright (C) 1994-96 Marc ZYNGIER
<zyngier@ufr-info-p7.ibp.fr> or <zyngier@ufr-info-p7.ibp.fr> or
<maz@gloups.fdn.fr> <maz@gloups.fdn.fr>
Copyright (C) 1999, 2000 Ingo Molnar, Red Hat Copyright (C) 1999, 2000 Ingo Molnar, Red Hat
RAID-0 management functions. RAID-0 management functions.
...@@ -12,10 +11,10 @@ ...@@ -12,10 +11,10 @@
it under the terms of the GNU General Public License as published by it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option) the Free Software Foundation; either version 2, or (at your option)
any later version. any later version.
You should have received a copy of the GNU General Public License You should have received a copy of the GNU General Public License
(for example /usr/src/linux/COPYING); if not, write to the Free (for example /usr/src/linux/COPYING); if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
#include <linux/blkdev.h> #include <linux/blkdev.h>
......
drivers/md/raid1.c
浏览文件 @ 88ed806a
...@@ -494,7 +494,6 @@ static void raid1_end_write_request(struct bio *bio, int error) ...@@ -494,7 +494,6 @@ static void raid1_end_write_request(struct bio *bio, int error)
bio_put(to_put); bio_put(to_put);
} }
/* /*
* This routine returns the disk from which the requested read should * This routine returns the disk from which the requested read should
* be done. There is a per-array 'next expected sequential IO' sector * be done. There is a per-array 'next expected sequential IO' sector
...@@ -901,18 +900,18 @@ static sector_t wait_barrier(struct r1conf *conf, struct bio *bio) ...@@ -901,18 +900,18 @@ static sector_t wait_barrier(struct r1conf *conf, struct bio *bio)
* However if there are already pending * However if there are already pending
* requests (preventing the barrier from * requests (preventing the barrier from
* rising completely), and the * rising completely), and the
* pre-process bio queue isn't empty, * per-process bio queue isn't empty,
* then don't wait, as we need to empty * then don't wait, as we need to empty
* that queue to get the nr_pending * that queue to allow conf->start_next_window
* count down. * to increase.
*/ */
wait_event_lock_irq(conf->wait_barrier, wait_event_lock_irq(conf->wait_barrier,
!conf->array_frozen && !conf->array_frozen &&
(!conf->barrier || (!conf->barrier ||
((conf->start_next_window < ((conf->start_next_window <
conf->next_resync + RESYNC_SECTORS) && conf->next_resync + RESYNC_SECTORS) &&
current->bio_list && current->bio_list &&
!bio_list_empty(current->bio_list))), !bio_list_empty(current->bio_list))),
conf->resync_lock); conf->resync_lock);
conf->nr_waiting--; conf->nr_waiting--;
} }
...@@ -1001,8 +1000,7 @@ static void unfreeze_array(struct r1conf *conf) ...@@ -1001,8 +1000,7 @@ static void unfreeze_array(struct r1conf *conf)
spin_unlock_irq(&conf->resync_lock); spin_unlock_irq(&conf->resync_lock);
} }
/* duplicate the data pages for behind I/O
/* duplicate the data pages for behind I/O
*/ */
static void alloc_behind_pages(struct bio *bio, struct r1bio *r1_bio) static void alloc_behind_pages(struct bio *bio, struct r1bio *r1_bio)
{ {
...@@ -1471,7 +1469,6 @@ static void status(struct seq_file *seq, struct mddev *mddev) ...@@ -1471,7 +1469,6 @@ static void status(struct seq_file *seq, struct mddev *mddev)
seq_printf(seq, "]"); seq_printf(seq, "]");
} }
static void error(struct mddev *mddev, struct md_rdev *rdev) static void error(struct mddev *mddev, struct md_rdev *rdev)
{ {
char b[BDEVNAME_SIZE]; char b[BDEVNAME_SIZE];
...@@ -1565,7 +1562,7 @@ static int raid1_spare_active(struct mddev *mddev) ...@@ -1565,7 +1562,7 @@ static int raid1_spare_active(struct mddev *mddev)
unsigned long flags; unsigned long flags;
/* /*
* Find all failed disks within the RAID1 configuration * Find all failed disks within the RAID1 configuration
* and mark them readable. * and mark them readable.
* Called under mddev lock, so rcu protection not needed. * Called under mddev lock, so rcu protection not needed.
*/ */
...@@ -1606,7 +1603,6 @@ static int raid1_spare_active(struct mddev *mddev) ...@@ -1606,7 +1603,6 @@ static int raid1_spare_active(struct mddev *mddev)
return count; return count;
} }
static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev) static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev)
{ {
struct r1conf *conf = mddev->private; struct r1conf *conf = mddev->private;
...@@ -1735,7 +1731,6 @@ static int raid1_remove_disk(struct mddev *mddev, struct md_rdev *rdev) ...@@ -1735,7 +1731,6 @@ static int raid1_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
return err; return err;
} }
static void end_sync_read(struct bio *bio, int error) static void end_sync_read(struct bio *bio, int error)
{ {
struct r1bio *r1_bio = bio->bi_private; struct r1bio *r1_bio = bio->bi_private;
...@@ -1947,7 +1942,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio) ...@@ -1947,7 +1942,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio)
return 1; return 1;
} }
static int process_checks(struct r1bio *r1_bio) static void process_checks(struct r1bio *r1_bio)
{ {
/* We have read all readable devices. If we haven't /* We have read all readable devices. If we haven't
* got the block, then there is no hope left. * got the block, then there is no hope left.
...@@ -2039,7 +2034,6 @@ static int process_checks(struct r1bio *r1_bio) ...@@ -2039,7 +2034,6 @@ static int process_checks(struct r1bio *r1_bio)
bio_copy_data(sbio, pbio); bio_copy_data(sbio, pbio);
} }
return 0;
} }
static void sync_request_write(struct mddev *mddev, struct r1bio *r1_bio) static void sync_request_write(struct mddev *mddev, struct r1bio *r1_bio)
...@@ -2057,8 +2051,8 @@ static void sync_request_write(struct mddev *mddev, struct r1bio *r1_bio) ...@@ -2057,8 +2051,8 @@ static void sync_request_write(struct mddev *mddev, struct r1bio *r1_bio)
return; return;
if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
if (process_checks(r1_bio) < 0) process_checks(r1_bio);
return;
/* /*
* schedule writes * schedule writes
*/ */
...@@ -2458,7 +2452,6 @@ static void raid1d(struct md_thread *thread) ...@@ -2458,7 +2452,6 @@ static void raid1d(struct md_thread *thread)
blk_finish_plug(&plug); blk_finish_plug(&plug);
} }
static int init_resync(struct r1conf *conf) static int init_resync(struct r1conf *conf)
{ {
int buffs; int buffs;
...@@ -2722,7 +2715,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipp ...@@ -2722,7 +2715,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, int *skipp
/* remove last page from this bio */ /* remove last page from this bio */
bio->bi_vcnt--; bio->bi_vcnt--;
bio->bi_iter.bi_size -= len; bio->bi_iter.bi_size -= len;
bio->bi_flags &= ~(1<< BIO_SEG_VALID); __clear_bit(BIO_SEG_VALID, &bio->bi_flags);
} }
goto bio_full; goto bio_full;
} }
...@@ -2947,9 +2940,9 @@ static int run(struct mddev *mddev) ...@@ -2947,9 +2940,9 @@ static int run(struct mddev *mddev)
printk(KERN_NOTICE "md/raid1:%s: not clean" printk(KERN_NOTICE "md/raid1:%s: not clean"
" -- starting background reconstruction\n", " -- starting background reconstruction\n",
mdname(mddev)); mdname(mddev));
printk(KERN_INFO printk(KERN_INFO
"md/raid1:%s: active with %d out of %d mirrors\n", "md/raid1:%s: active with %d out of %d mirrors\n",
mdname(mddev), mddev->raid_disks - mddev->degraded, mdname(mddev), mddev->raid_disks - mddev->degraded,
mddev->raid_disks); mddev->raid_disks);
/* /*
......
drivers/md/raid1.h
浏览文件 @ 88ed806a
...@@ -90,7 +90,6 @@ struct r1conf { ...@@ -90,7 +90,6 @@ struct r1conf {
*/ */
int recovery_disabled; int recovery_disabled;
/* poolinfo contains information about the content of the /* poolinfo contains information about the content of the
* mempools - it changes when the array grows or shrinks * mempools - it changes when the array grows or shrinks
*/ */
...@@ -103,7 +102,6 @@ struct r1conf { ...@@ -103,7 +102,6 @@ struct r1conf {
*/ */
struct page *tmppage; struct page *tmppage;
/* When taking over an array from a different personality, we store /* When taking over an array from a different personality, we store
* the new thread here until we fully activate the array. * the new thread here until we fully activate the array.
*/ */
......
drivers/md/raid10.c
浏览文件 @ 88ed806a
...@@ -366,7 +366,6 @@ static void raid10_end_read_request(struct bio *bio, int error) ...@@ -366,7 +366,6 @@ static void raid10_end_read_request(struct bio *bio, int error)
struct md_rdev *rdev; struct md_rdev *rdev;
struct r10conf *conf = r10_bio->mddev->private; struct r10conf *conf = r10_bio->mddev->private;
slot = r10_bio->read_slot; slot = r10_bio->read_slot;
dev = r10_bio->devs[slot].devnum; dev = r10_bio->devs[slot].devnum;
rdev = r10_bio->devs[slot].rdev; rdev = r10_bio->devs[slot].rdev;
...@@ -1559,7 +1558,6 @@ static void make_request(struct mddev *mddev, struct bio *bio) ...@@ -1559,7 +1558,6 @@ static void make_request(struct mddev *mddev, struct bio *bio)
md_write_start(mddev, bio); md_write_start(mddev, bio);
do { do {
/* /*
...@@ -1782,7 +1780,6 @@ static int raid10_spare_active(struct mddev *mddev) ...@@ -1782,7 +1780,6 @@ static int raid10_spare_active(struct mddev *mddev)
return count; return count;
} }
static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev) static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev)
{ {
struct r10conf *conf = mddev->private; struct r10conf *conf = mddev->private;
...@@ -1929,7 +1926,6 @@ static int raid10_remove_disk(struct mddev *mddev, struct md_rdev *rdev) ...@@ -1929,7 +1926,6 @@ static int raid10_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
return err; return err;
} }
static void end_sync_read(struct bio *bio, int error) static void end_sync_read(struct bio *bio, int error)
{ {
struct r10bio *r10_bio = bio->bi_private; struct r10bio *r10_bio = bio->bi_private;
...@@ -2295,7 +2291,6 @@ static void recovery_request_write(struct mddev *mddev, struct r10bio *r10_bio) ...@@ -2295,7 +2291,6 @@ static void recovery_request_write(struct mddev *mddev, struct r10bio *r10_bio)
} }
} }
/* /*
* Used by fix_read_error() to decay the per rdev read_errors. * Used by fix_read_error() to decay the per rdev read_errors.
* We halve the read error count for every hour that has elapsed * We halve the read error count for every hour that has elapsed
...@@ -2852,7 +2847,6 @@ static void raid10d(struct md_thread *thread) ...@@ -2852,7 +2847,6 @@ static void raid10d(struct md_thread *thread)
blk_finish_plug(&plug); blk_finish_plug(&plug);
} }
static int init_resync(struct r10conf *conf) static int init_resync(struct r10conf *conf)
{ {
int buffs; int buffs;
...@@ -3388,7 +3382,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr, ...@@ -3388,7 +3382,7 @@ static sector_t sync_request(struct mddev *mddev, sector_t sector_nr,
/* remove last page from this bio */ /* remove last page from this bio */
bio2->bi_vcnt--; bio2->bi_vcnt--;
bio2->bi_iter.bi_size -= len; bio2->bi_iter.bi_size -= len;
bio2->bi_flags &= ~(1<< BIO_SEG_VALID); __clear_bit(BIO_SEG_VALID, &bio2->bi_flags);
} }
goto bio_full; goto bio_full;
} }
...@@ -3776,7 +3770,6 @@ static int run(struct mddev *mddev) ...@@ -3776,7 +3770,6 @@ static int run(struct mddev *mddev)
blk_queue_merge_bvec(mddev->queue, raid10_mergeable_bvec); blk_queue_merge_bvec(mddev->queue, raid10_mergeable_bvec);
} }
if (md_integrity_register(mddev)) if (md_integrity_register(mddev))
goto out_free_conf; goto out_free_conf;
...@@ -3834,6 +3827,8 @@ static int stop(struct mddev *mddev) ...@@ -3834,6 +3827,8 @@ static int stop(struct mddev *mddev)
mempool_destroy(conf->r10bio_pool); mempool_destroy(conf->r10bio_pool);
safe_put_page(conf->tmppage); safe_put_page(conf->tmppage);
kfree(conf->mirrors); kfree(conf->mirrors);
kfree(conf->mirrors_old);
kfree(conf->mirrors_new);
kfree(conf); kfree(conf);
mddev->private = NULL; mddev->private = NULL;
return 0; return 0;
...@@ -4121,7 +4116,7 @@ static int raid10_start_reshape(struct mddev *mddev) ...@@ -4121,7 +4116,7 @@ static int raid10_start_reshape(struct mddev *mddev)
memcpy(conf->mirrors_new, conf->mirrors, memcpy(conf->mirrors_new, conf->mirrors,
sizeof(struct raid10_info)*conf->prev.raid_disks); sizeof(struct raid10_info)*conf->prev.raid_disks);
smp_mb(); smp_mb();
kfree(conf->mirrors_old); /* FIXME and elsewhere */ kfree(conf->mirrors_old);
conf->mirrors_old = conf->mirrors; conf->mirrors_old = conf->mirrors;
conf->mirrors = conf->mirrors_new; conf->mirrors = conf->mirrors_new;
conf->mirrors_new = NULL; conf->mirrors_new = NULL;
...@@ -4416,7 +4411,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, ...@@ -4416,7 +4411,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
read_bio->bi_end_io = end_sync_read; read_bio->bi_end_io = end_sync_read;
read_bio->bi_rw = READ; read_bio->bi_rw = READ;
read_bio->bi_flags &= (~0UL << BIO_RESET_BITS); read_bio->bi_flags &= (~0UL << BIO_RESET_BITS);
read_bio->bi_flags |= 1 << BIO_UPTODATE; __set_bit(BIO_UPTODATE, &read_bio->bi_flags);
read_bio->bi_vcnt = 0; read_bio->bi_vcnt = 0;
read_bio->bi_iter.bi_size = 0; read_bio->bi_iter.bi_size = 0;
r10_bio->master_bio = read_bio; r10_bio->master_bio = read_bio;
...@@ -4473,7 +4468,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr, ...@@ -4473,7 +4468,7 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
/* Remove last page from this bio */ /* Remove last page from this bio */
bio2->bi_vcnt--; bio2->bi_vcnt--;
bio2->bi_iter.bi_size -= len; bio2->bi_iter.bi_size -= len;
bio2->bi_flags &= ~(1<<BIO_SEG_VALID); __clear_bit(BIO_SEG_VALID, &bio2->bi_flags);
} }
goto bio_full; goto bio_full;
} }
...@@ -4575,7 +4570,6 @@ static void end_reshape(struct r10conf *conf) ...@@ -4575,7 +4570,6 @@ static void end_reshape(struct r10conf *conf)
conf->fullsync = 0; conf->fullsync = 0;
} }
static int handle_reshape_read_error(struct mddev *mddev, static int handle_reshape_read_error(struct mddev *mddev,
struct r10bio *r10_bio) struct r10bio *r10_bio)
{ {
......
drivers/md/raid5.c
浏览文件 @ 88ed806a
...@@ -463,7 +463,6 @@ static inline void insert_hash(struct r5conf *conf, struct stripe_head *sh) ...@@ -463,7 +463,6 @@ static inline void insert_hash(struct r5conf *conf, struct stripe_head *sh)
hlist_add_head(&sh->hash, hp); hlist_add_head(&sh->hash, hp);
} }
/* find an idle stripe, make sure it is unhashed, and return it. */ /* find an idle stripe, make sure it is unhashed, and return it. */
static struct stripe_head *get_free_stripe(struct r5conf *conf, int hash) static struct stripe_head *get_free_stripe(struct r5conf *conf, int hash)
{ {
...@@ -531,9 +530,7 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int previous) ...@@ -531,9 +530,7 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int previous)
BUG_ON(stripe_operations_active(sh)); BUG_ON(stripe_operations_active(sh));
pr_debug("init_stripe called, stripe %llu\n", pr_debug("init_stripe called, stripe %llu\n",
(unsigned long long)sh->sector); (unsigned long long)sector);
remove_hash(sh);
retry: retry:
seq = read_seqcount_begin(&conf->gen_lock); seq = read_seqcount_begin(&conf->gen_lock);
sh->generation = conf->generation - previous; sh->generation = conf->generation - previous;
...@@ -542,7 +539,6 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int previous) ...@@ -542,7 +539,6 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int previous)
stripe_set_idx(sector, conf, previous, sh); stripe_set_idx(sector, conf, previous, sh);
sh->state = 0; sh->state = 0;
for (i = sh->disks; i--; ) { for (i = sh->disks; i--; ) {
struct r5dev *dev = &sh->dev[i]; struct r5dev *dev = &sh->dev[i];
...@@ -1350,7 +1346,6 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu) ...@@ -1350,7 +1346,6 @@ ops_run_compute6_2(struct stripe_head *sh, struct raid5_percpu *percpu)
} }
} }
static void ops_complete_prexor(void *stripe_head_ref) static void ops_complete_prexor(void *stripe_head_ref)
{ {
struct stripe_head *sh = stripe_head_ref; struct stripe_head *sh = stripe_head_ref;
...@@ -2419,7 +2414,6 @@ static sector_t raid5_compute_sector(struct r5conf *conf, sector_t r_sector, ...@@ -2419,7 +2414,6 @@ static sector_t raid5_compute_sector(struct r5conf *conf, sector_t r_sector,
return new_sector; return new_sector;
} }
static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous) static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous)
{ {
struct r5conf *conf = sh->raid_conf; struct r5conf *conf = sh->raid_conf;
...@@ -2437,7 +2431,6 @@ static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous) ...@@ -2437,7 +2431,6 @@ static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous)
sector_t r_sector; sector_t r_sector;
struct stripe_head sh2; struct stripe_head sh2;
chunk_offset = sector_div(new_sector, sectors_per_chunk); chunk_offset = sector_div(new_sector, sectors_per_chunk);
stripe = new_sector; stripe = new_sector;
...@@ -2541,7 +2534,6 @@ static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous) ...@@ -2541,7 +2534,6 @@ static sector_t compute_blocknr(struct stripe_head *sh, int i, int previous)
return r_sector; return r_sector;
} }
static void static void
schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s, schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s,
int rcw, int expand) int rcw, int expand)
...@@ -3013,7 +3005,6 @@ static void handle_stripe_fill(struct stripe_head *sh, ...@@ -3013,7 +3005,6 @@ static void handle_stripe_fill(struct stripe_head *sh,
set_bit(STRIPE_HANDLE, &sh->state); set_bit(STRIPE_HANDLE, &sh->state);
} }
/* handle_stripe_clean_event /* handle_stripe_clean_event
* any written block on an uptodate or failed drive can be returned. * any written block on an uptodate or failed drive can be returned.
* Note that if we 'wrote' to a failed drive, it will be UPTODATE, but * Note that if we 'wrote' to a failed drive, it will be UPTODATE, but
...@@ -3304,7 +3295,6 @@ static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh, ...@@ -3304,7 +3295,6 @@ static void handle_parity_checks5(struct r5conf *conf, struct stripe_head *sh,
} }
} }
static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh, static void handle_parity_checks6(struct r5conf *conf, struct stripe_head *sh,
struct stripe_head_state *s, struct stripe_head_state *s,
int disks) int disks)
...@@ -3939,7 +3929,6 @@ static void handle_stripe(struct stripe_head *sh) ...@@ -3939,7 +3929,6 @@ static void handle_stripe(struct stripe_head *sh)
} }
} }
/* Finish reconstruct operations initiated by the expansion process */ /* Finish reconstruct operations initiated by the expansion process */
if (sh->reconstruct_state == reconstruct_state_result) { if (sh->reconstruct_state == reconstruct_state_result) {
struct stripe_head *sh_src struct stripe_head *sh_src
...@@ -4137,7 +4126,6 @@ static int raid5_mergeable_bvec(struct request_queue *q, ...@@ -4137,7 +4126,6 @@ static int raid5_mergeable_bvec(struct request_queue *q,
return max; return max;
} }
static int in_chunk_boundary(struct mddev *mddev, struct bio *bio) static int in_chunk_boundary(struct mddev *mddev, struct bio *bio)
{ {
sector_t sector = bio->bi_iter.bi_sector + get_start_sect(bio->bi_bdev); sector_t sector = bio->bi_iter.bi_sector + get_start_sect(bio->bi_bdev);
...@@ -4167,7 +4155,6 @@ static void add_bio_to_retry(struct bio *bi,struct r5conf *conf) ...@@ -4167,7 +4155,6 @@ static void add_bio_to_retry(struct bio *bi,struct r5conf *conf)
md_wakeup_thread(conf->mddev->thread); md_wakeup_thread(conf->mddev->thread);
} }
static struct bio *remove_bio_from_retry(struct r5conf *conf) static struct bio *remove_bio_from_retry(struct r5conf *conf)
{ {
struct bio *bi; struct bio *bi;
...@@ -4191,7 +4178,6 @@ static struct bio *remove_bio_from_retry(struct r5conf *conf) ...@@ -4191,7 +4178,6 @@ static struct bio *remove_bio_from_retry(struct r5conf *conf)
return bi; return bi;
} }
/* /*
* The "raid5_align_endio" should check if the read succeeded and if it * The "raid5_align_endio" should check if the read succeeded and if it
* did, call bio_endio on the original bio (having bio_put the new bio * did, call bio_endio on the original bio (having bio_put the new bio
...@@ -4224,7 +4210,6 @@ static void raid5_align_endio(struct bio *bi, int error) ...@@ -4224,7 +4210,6 @@ static void raid5_align_endio(struct bio *bi, int error)
return; return;
} }
pr_debug("raid5_align_endio : io error...handing IO for a retry\n"); pr_debug("raid5_align_endio : io error...handing IO for a retry\n");
add_bio_to_retry(raid_bi, conf); add_bio_to_retry(raid_bi, conf);
...@@ -4249,7 +4234,6 @@ static int bio_fits_rdev(struct bio *bi) ...@@ -4249,7 +4234,6 @@ static int bio_fits_rdev(struct bio *bi)
return 1; return 1;
} }
static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio) static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio)
{ {
struct r5conf *conf = mddev->private; struct r5conf *conf = mddev->private;
...@@ -4301,7 +4285,7 @@ static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio) ...@@ -4301,7 +4285,7 @@ static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio)
rcu_read_unlock(); rcu_read_unlock();
raid_bio->bi_next = (void*)rdev; raid_bio->bi_next = (void*)rdev;
align_bi->bi_bdev = rdev->bdev; align_bi->bi_bdev = rdev->bdev;
align_bi->bi_flags &= ~(1 << BIO_SEG_VALID); __clear_bit(BIO_SEG_VALID, &align_bi->bi_flags);
if (!bio_fits_rdev(align_bi) || if (!bio_fits_rdev(align_bi) ||
is_badblock(rdev, align_bi->bi_iter.bi_sector, is_badblock(rdev, align_bi->bi_iter.bi_sector,
...@@ -5446,7 +5430,6 @@ raid5_skip_copy = __ATTR(skip_copy, S_IRUGO | S_IWUSR, ...@@ -5446,7 +5430,6 @@ raid5_skip_copy = __ATTR(skip_copy, S_IRUGO | S_IWUSR,
raid5_show_skip_copy, raid5_show_skip_copy,
raid5_store_skip_copy); raid5_store_skip_copy);
static ssize_t static ssize_t
stripe_cache_active_show(struct mddev *mddev, char *page) stripe_cache_active_show(struct mddev *mddev, char *page)
{ {
...@@ -5898,7 +5881,6 @@ static struct r5conf *setup_conf(struct mddev *mddev) ...@@ -5898,7 +5881,6 @@ static struct r5conf *setup_conf(struct mddev *mddev)
return ERR_PTR(-ENOMEM); return ERR_PTR(-ENOMEM);
} }
static int only_parity(int raid_disk, int algo, int raid_disks, int max_degraded) static int only_parity(int raid_disk, int algo, int raid_disks, int max_degraded)
{ {
switch (algo) { switch (algo) {
...@@ -5911,7 +5893,7 @@ static int only_parity(int raid_disk, int algo, int raid_disks, int max_degraded ...@@ -5911,7 +5893,7 @@ static int only_parity(int raid_disk, int algo, int raid_disks, int max_degraded
return 1; return 1;
break; break;
case ALGORITHM_PARITY_0_6: case ALGORITHM_PARITY_0_6:
if (raid_disk == 0 || if (raid_disk == 0 ||
raid_disk == raid_disks - 1) raid_disk == raid_disks - 1)
return 1; return 1;
break; break;
...@@ -6165,7 +6147,6 @@ static int run(struct mddev *mddev) ...@@ -6165,7 +6147,6 @@ static int run(struct mddev *mddev)
"reshape"); "reshape");
} }
/* Ok, everything is just fine now */ /* Ok, everything is just fine now */
if (mddev->to_remove == &raid5_attrs_group) if (mddev->to_remove == &raid5_attrs_group)
mddev->to_remove = NULL; mddev->to_remove = NULL;
...@@ -6814,7 +6795,6 @@ static void raid5_quiesce(struct mddev *mddev, int state) ...@@ -6814,7 +6795,6 @@ static void raid5_quiesce(struct mddev *mddev, int state)
} }
} }
static void *raid45_takeover_raid0(struct mddev *mddev, int level) static void *raid45_takeover_raid0(struct mddev *mddev, int level)
{ {
struct r0conf *raid0_conf = mddev->private; struct r0conf *raid0_conf = mddev->private;
...@@ -6841,7 +6821,6 @@ static void *raid45_takeover_raid0(struct mddev *mddev, int level) ...@@ -6841,7 +6821,6 @@ static void *raid45_takeover_raid0(struct mddev *mddev, int level)
return setup_conf(mddev); return setup_conf(mddev);
} }
static void *raid5_takeover_raid1(struct mddev *mddev) static void *raid5_takeover_raid1(struct mddev *mddev)
{ {
int chunksect; int chunksect;
...@@ -6902,7 +6881,6 @@ static void *raid5_takeover_raid6(struct mddev *mddev) ...@@ -6902,7 +6881,6 @@ static void *raid5_takeover_raid6(struct mddev *mddev)
return setup_conf(mddev); return setup_conf(mddev);
} }
static int raid5_check_reshape(struct mddev *mddev) static int raid5_check_reshape(struct mddev *mddev)
{ {
/* For a 2-drive array, the layout and chunk size can be changed /* For a 2-drive array, the layout and chunk size can be changed
...@@ -7051,7 +7029,6 @@ static void *raid6_takeover(struct mddev *mddev) ...@@ -7051,7 +7029,6 @@ static void *raid6_takeover(struct mddev *mddev)
return setup_conf(mddev); return setup_conf(mddev);
} }
static struct md_personality raid6_personality = static struct md_personality raid6_personality =
{ {
.name = "raid6", .name = "raid6",
......
drivers/md/raid5.h
浏览文件 @ 88ed806a
...@@ -155,7 +155,7 @@ ...@@ -155,7 +155,7 @@
*/ */
/* /*
* Operations state - intermediate states that are visible outside of * Operations state - intermediate states that are visible outside of
* STRIPE_ACTIVE. * STRIPE_ACTIVE.
* In general _idle indicates nothing is running, _run indicates a data * In general _idle indicates nothing is running, _run indicates a data
* processing operation is active, and _result means the data processing result * processing operation is active, and _result means the data processing result
...@@ -364,7 +364,6 @@ enum { ...@@ -364,7 +364,6 @@ enum {
* HANDLE gets cleared if stripe_handle leaves nothing locked. * HANDLE gets cleared if stripe_handle leaves nothing locked.
*/ */
struct disk_info { struct disk_info {
struct md_rdev *rdev, *replacement; struct md_rdev *rdev, *replacement;
}; };
...@@ -528,7 +527,6 @@ struct r5conf { ...@@ -528,7 +527,6 @@ struct r5conf {
#define ALGORITHM_ROTATING_N_RESTART 9 /* DDF PRL=6 RLQ=2 */ #define ALGORITHM_ROTATING_N_RESTART 9 /* DDF PRL=6 RLQ=2 */
#define ALGORITHM_ROTATING_N_CONTINUE 10 /*DDF PRL=6 RLQ=3 */ #define ALGORITHM_ROTATING_N_CONTINUE 10 /*DDF PRL=6 RLQ=3 */
/* For every RAID5 algorithm we define a RAID6 algorithm /* For every RAID5 algorithm we define a RAID6 algorithm
* with exactly the same layout for data and parity, and * with exactly the same layout for data and parity, and
* with the Q block always on the last device (N-1). * with the Q block always on the last device (N-1).
......
include/uapi/linux/raid/md_u.h
浏览文件 @ 88ed806a
...@@ -39,7 +39,6 @@ ...@@ -39,7 +39,6 @@
#define RAID_VERSION _IOR (MD_MAJOR, 0x10, mdu_version_t) #define RAID_VERSION _IOR (MD_MAJOR, 0x10, mdu_version_t)
#define GET_ARRAY_INFO _IOR (MD_MAJOR, 0x11, mdu_array_info_t) #define GET_ARRAY_INFO _IOR (MD_MAJOR, 0x11, mdu_array_info_t)
#define GET_DISK_INFO _IOR (MD_MAJOR, 0x12, mdu_disk_info_t) #define GET_DISK_INFO _IOR (MD_MAJOR, 0x12, mdu_disk_info_t)
#define PRINT_RAID_DEBUG _IO (MD_MAJOR, 0x13)
#define RAID_AUTORUN _IO (MD_MAJOR, 0x14) #define RAID_AUTORUN _IO (MD_MAJOR, 0x14)
#define GET_BITMAP_FILE _IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t) #define GET_BITMAP_FILE _IOR (MD_MAJOR, 0x15, mdu_bitmap_file_t)
......
lib/raid6/algos.c
浏览文件 @ 88ed806a
...@@ -121,9 +121,9 @@ static inline const struct raid6_recov_calls *raid6_choose_recov(void) ...@@ -121,9 +121,9 @@ static inline const struct raid6_recov_calls *raid6_choose_recov(void)
raid6_2data_recov = best->data2; raid6_2data_recov = best->data2;
raid6_datap_recov = best->datap; raid6_datap_recov = best->datap;
printk("raid6: using %s recovery algorithm\n", best->name); pr_info("raid6: using %s recovery algorithm\n", best->name);
} else } else
printk("raid6: Yikes! No recovery algorithm found!\n"); pr_err("raid6: Yikes! No recovery algorithm found!\n");
return best; return best;
} }
...@@ -157,18 +157,18 @@ static inline const struct raid6_calls *raid6_choose_gen( ...@@ -157,18 +157,18 @@ static inline const struct raid6_calls *raid6_choose_gen(
bestperf = perf; bestperf = perf;
best = *algo; best = *algo;
} }
printk("raid6: %-8s %5ld MB/s\n", (*algo)->name, pr_info("raid6: %-8s %5ld MB/s\n", (*algo)->name,
(perf*HZ) >> (20-16+RAID6_TIME_JIFFIES_LG2)); (perf*HZ) >> (20-16+RAID6_TIME_JIFFIES_LG2));
} }
} }
if (best) { if (best) {
printk("raid6: using algorithm %s (%ld MB/s)\n", pr_info("raid6: using algorithm %s (%ld MB/s)\n",
best->name, best->name,
(bestperf*HZ) >> (20-16+RAID6_TIME_JIFFIES_LG2)); (bestperf*HZ) >> (20-16+RAID6_TIME_JIFFIES_LG2));
raid6_call = *best; raid6_call = *best;
} else } else
printk("raid6: Yikes! No algorithm found!\n"); pr_err("raid6: Yikes! No algorithm found!\n");
return best; return best;
} }
...@@ -194,7 +194,7 @@ int __init raid6_select_algo(void) ...@@ -194,7 +194,7 @@ int __init raid6_select_algo(void)
syndromes = (void *) __get_free_pages(GFP_KERNEL, 1); syndromes = (void *) __get_free_pages(GFP_KERNEL, 1);
if (!syndromes) { if (!syndromes) {
printk("raid6: Yikes! No memory available.\n"); pr_err("raid6: Yikes! No memory available.\n");
return -ENOMEM; return -ENOMEM;
} }
......
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