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Merge branch 'akpm' (patches from Andrew Morton)

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Merge misc fixes from Andrew Morton:
 "7 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm/debug_pagealloc: fix build failure on ppc and some other archs
  nilfs2: fix deadlock of segment constructor over I_SYNC flag
  MAINTAINERS: remove SUPERH website
  memcg, shmem: fix shmem migration to use lrucare
  mm: export "high_memory" symbol on !MMU
  .mailmap: update Konstantin Khlebnikov's email address
  mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range
This commit is contained in:
Linus Torvalds 2015-02-06 08:52:53 -08:00
commit 48beb121f0
13 changed files with 52 additions and 34 deletions
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1
.mailmap
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@ -73,6 +73,7 @@ Juha Yrjola <juha.yrjola@nokia.com>
Juha Yrjola <juha.yrjola@solidboot.com>
Kay Sievers <kay.sievers@vrfy.org>
Kenneth W Chen <kenneth.w.chen@intel.com>
Konstantin Khlebnikov <koct9i@gmail.com> <k.khlebnikov@samsung.com>
Koushik <raghavendra.koushik@neterion.com>
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Leonid I Ananiev <leonid.i.ananiev@intel.com>

1
MAINTAINERS
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@ -9241,7 +9241,6 @@ F: drivers/net/ethernet/dlink/sundance.c
SUPERH
L: linux-sh@vger.kernel.org
W: http://www.linux-sh.org
Q: http://patchwork.kernel.org/project/linux-sh/list/
S: Orphan
F: Documentation/sh/

7
arch/mn10300/include/asm/cacheflush.h
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@ -159,13 +159,6 @@ extern void flush_icache_range(unsigned long start, unsigned long end);
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
/*
* Internal debugging function
*/
#ifdef CONFIG_DEBUG_PAGEALLOC
extern void kernel_map_pages(struct page *page, int numpages, int enable);
#endif
#endif /* __ASSEMBLY__ */
#endif /* _ASM_CACHEFLUSH_H */

7
arch/powerpc/include/asm/cacheflush.h
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@ -60,13 +60,6 @@ extern void flush_dcache_phys_range(unsigned long start, unsigned long stop);
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
#ifdef CONFIG_DEBUG_PAGEALLOC
/* internal debugging function */
void kernel_map_pages(struct page *page, int numpages, int enable);
#endif
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_CACHEFLUSH_H */

4
arch/s390/include/asm/cacheflush.h
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@ -4,10 +4,6 @@
/* Caches aren't brain-dead on the s390. */
#include <asm-generic/cacheflush.h>
#ifdef CONFIG_DEBUG_PAGEALLOC
void kernel_map_pages(struct page *page, int numpages, int enable);
#endif
int set_memory_ro(unsigned long addr, int numpages);
int set_memory_rw(unsigned long addr, int numpages);
int set_memory_nx(unsigned long addr, int numpages);

5
arch/sparc/include/asm/cacheflush_64.h
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@ -74,11 +74,6 @@ void flush_ptrace_access(struct vm_area_struct *, struct page *,
#define flush_cache_vmap(start, end) do { } while (0)
#define flush_cache_vunmap(start, end) do { } while (0)
#ifdef CONFIG_DEBUG_PAGEALLOC
/* internal debugging function */
void kernel_map_pages(struct page *page, int numpages, int enable);
#endif
#endif /* !__ASSEMBLY__ */
#endif /* _SPARC64_CACHEFLUSH_H */

2
fs/nilfs2/nilfs.h
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@ -141,7 +141,6 @@ enum {
* @ti_save: Backup of journal_info field of task_struct
* @ti_flags: Flags
* @ti_count: Nest level
* @ti_garbage: List of inode to be put when releasing semaphore
*/
struct nilfs_transaction_info {
u32 ti_magic;
@ -150,7 +149,6 @@ struct nilfs_transaction_info {
one of other filesystems has a bug. */
unsigned short ti_flags;
unsigned short ti_count;
struct list_head ti_garbage;
};
/* ti_magic */

44
fs/nilfs2/segment.c
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@ -305,7 +305,6 @@ static void nilfs_transaction_lock(struct super_block *sb,
ti->ti_count = 0;
ti->ti_save = cur_ti;
ti->ti_magic = NILFS_TI_MAGIC;
INIT_LIST_HEAD(&ti->ti_garbage);
current->journal_info = ti;
for (;;) {
@ -332,8 +331,6 @@ static void nilfs_transaction_unlock(struct super_block *sb)
up_write(&nilfs->ns_segctor_sem);
current->journal_info = ti->ti_save;
if (!list_empty(&ti->ti_garbage))
nilfs_dispose_list(nilfs, &ti->ti_garbage, 0);
}
static void *nilfs_segctor_map_segsum_entry(struct nilfs_sc_info *sci,
@ -746,6 +743,15 @@ static void nilfs_dispose_list(struct the_nilfs *nilfs,
}
}
static void nilfs_iput_work_func(struct work_struct *work)
{
struct nilfs_sc_info *sci = container_of(work, struct nilfs_sc_info,
sc_iput_work);
struct the_nilfs *nilfs = sci->sc_super->s_fs_info;
nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 0);
}
static int nilfs_test_metadata_dirty(struct the_nilfs *nilfs,
struct nilfs_root *root)
{
@ -1900,8 +1906,8 @@ static int nilfs_segctor_collect_dirty_files(struct nilfs_sc_info *sci,
static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci,
struct the_nilfs *nilfs)
{
struct nilfs_transaction_info *ti = current->journal_info;
struct nilfs_inode_info *ii, *n;
int defer_iput = false;
spin_lock(&nilfs->ns_inode_lock);
list_for_each_entry_safe(ii, n, &sci->sc_dirty_files, i_dirty) {
@ -1912,9 +1918,24 @@ static void nilfs_segctor_drop_written_files(struct nilfs_sc_info *sci,
clear_bit(NILFS_I_BUSY, &ii->i_state);
brelse(ii->i_bh);
ii->i_bh = NULL;
list_move_tail(&ii->i_dirty, &ti->ti_garbage);
list_del_init(&ii->i_dirty);
if (!ii->vfs_inode.i_nlink) {
/*
* Defer calling iput() to avoid a deadlock
* over I_SYNC flag for inodes with i_nlink == 0
*/
list_add_tail(&ii->i_dirty, &sci->sc_iput_queue);
defer_iput = true;
} else {
spin_unlock(&nilfs->ns_inode_lock);
iput(&ii->vfs_inode);
spin_lock(&nilfs->ns_inode_lock);
}
}
spin_unlock(&nilfs->ns_inode_lock);
if (defer_iput)
schedule_work(&sci->sc_iput_work);
}
/*
@ -2583,6 +2604,8 @@ static struct nilfs_sc_info *nilfs_segctor_new(struct super_block *sb,
INIT_LIST_HEAD(&sci->sc_segbufs);
INIT_LIST_HEAD(&sci->sc_write_logs);
INIT_LIST_HEAD(&sci->sc_gc_inodes);
INIT_LIST_HEAD(&sci->sc_iput_queue);
INIT_WORK(&sci->sc_iput_work, nilfs_iput_work_func);
init_timer(&sci->sc_timer);
sci->sc_interval = HZ * NILFS_SC_DEFAULT_TIMEOUT;
@ -2609,6 +2632,8 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci)
ret = nilfs_segctor_construct(sci, SC_LSEG_SR);
nilfs_transaction_unlock(sci->sc_super);
flush_work(&sci->sc_iput_work);
} while (ret && retrycount-- > 0);
}
@ -2633,6 +2658,9 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
|| sci->sc_seq_request != sci->sc_seq_done);
spin_unlock(&sci->sc_state_lock);
if (flush_work(&sci->sc_iput_work))
flag = true;
if (flag || !nilfs_segctor_confirm(sci))
nilfs_segctor_write_out(sci);
@ -2642,6 +2670,12 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
nilfs_dispose_list(nilfs, &sci->sc_dirty_files, 1);
}
if (!list_empty(&sci->sc_iput_queue)) {
nilfs_warning(sci->sc_super, __func__,
"iput queue is not empty\n");
nilfs_dispose_list(nilfs, &sci->sc_iput_queue, 1);
}
WARN_ON(!list_empty(&sci->sc_segbufs));
WARN_ON(!list_empty(&sci->sc_write_logs));

5
fs/nilfs2/segment.h
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@ -26,6 +26,7 @@
#include <linux/types.h>
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/workqueue.h>
#include <linux/nilfs2_fs.h>
#include "nilfs.h"
@ -92,6 +93,8 @@ struct nilfs_segsum_pointer {
* @sc_nblk_inc: Block count of current generation
* @sc_dirty_files: List of files to be written
* @sc_gc_inodes: List of GC inodes having blocks to be written
* @sc_iput_queue: list of inodes for which iput should be done
* @sc_iput_work: work struct to defer iput call
* @sc_freesegs: array of segment numbers to be freed
* @sc_nfreesegs: number of segments on @sc_freesegs
* @sc_dsync_inode: inode whose data pages are written for a sync operation
@ -135,6 +138,8 @@ struct nilfs_sc_info {
struct list_head sc_dirty_files;
struct list_head sc_gc_inodes;
struct list_head sc_iput_queue;
struct work_struct sc_iput_work;
__u64 *sc_freesegs;
size_t sc_nfreesegs;

2
mm/memcontrol.c
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@ -5773,7 +5773,7 @@ void mem_cgroup_uncharge_list(struct list_head *page_list)
* mem_cgroup_migrate - migrate a charge to another page
* @oldpage: currently charged page
* @newpage: page to transfer the charge to
* @lrucare: both pages might be on the LRU already
* @lrucare: either or both pages might be on the LRU already
*
* Migrate the charge from @oldpage to @newpage.
*

1
mm/nommu.c
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@ -59,6 +59,7 @@
#endif
void *high_memory;
EXPORT_SYMBOL(high_memory);
struct page *mem_map;
unsigned long max_mapnr;
unsigned long highest_memmap_pfn;

5
mm/pagewalk.c
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@ -199,7 +199,10 @@ int walk_page_range(unsigned long addr, unsigned long end,
*/
if ((vma->vm_start <= addr) &&
(vma->vm_flags & VM_PFNMAP)) {
next = vma->vm_end;
if (walk->pte_hole)
err = walk->pte_hole(addr, next, walk);
if (err)
break;
pgd = pgd_offset(walk->mm, next);
continue;
}

2
mm/shmem.c
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@ -1013,7 +1013,7 @@ static int shmem_replace_page(struct page **pagep, gfp_t gfp,
*/
oldpage = newpage;
} else {
mem_cgroup_migrate(oldpage, newpage, false);
mem_cgroup_migrate(oldpage, newpage, true);
lru_cache_add_anon(newpage);
*pagep = newpage;
}