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Merge branch 'akpm' (Andrew's patch-bomb)
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Merge fixes from Andrew Morton:
 "13 fixes.  The acerhdf patches aren't (really) fixes.  But they've
  been stuck in my tree for up to two years, sent to Matthew multiple
  times and the developers are unhappy."

* emailed from Andrew Morton <akpm@linux-foundation.org>: (13 patches)
  mm: fix NULL ptr dereference in move_pages
  mm: fix NULL ptr dereference in migrate_pages
  revert "proc: clear_refs: do not clear reserved pages"
  drivers/rtc/rtc-ds1307.c: fix BUG shown with lock debugging enabled
  arch/arm/mach-ux500/mbox-db5500.c: world-writable sysfs fifo file
  hugetlbfs: lockdep annotate root inode properly
  acerhdf: lowered default temp fanon/fanoff values
  acerhdf: add support for new hardware
  acerhdf: add support for Aspire 1410 BIOS v1.3314
  fs/buffer.c: remove BUG() in possible but rare condition
  mm: fix up the vmscan stat in vmstat
  epoll: clear the tfile_check_list on -ELOOP
  mm/hugetlb: fix warning in alloc_huge_page/dequeue_huge_page_vma
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Linus Torvalds committed Apr 26, 2012
2 parents 2300fd6 + 6e8b09e commit 110a5c8
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Showing 13 changed files with 80 additions and 48 deletions.
2 changes: 1 addition & 1 deletion arch/arm/mach-ux500/mbox-db5500.c
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Original file line number Diff line number Diff line change
Expand Up @@ -168,7 +168,7 @@ static ssize_t mbox_read_fifo(struct device *dev,
return sprintf(buf, "0x%X\n", mbox_value);
}

static DEVICE_ATTR(fifo, S_IWUGO | S_IRUGO, mbox_read_fifo, mbox_write_fifo);
static DEVICE_ATTR(fifo, S_IWUSR | S_IRUGO, mbox_read_fifo, mbox_write_fifo);

static int mbox_show(struct seq_file *s, void *data)
{
Expand Down
67 changes: 45 additions & 22 deletions drivers/platform/x86/acerhdf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,7 @@
*/
#undef START_IN_KERNEL_MODE

#define DRV_VER "0.5.24"
#define DRV_VER "0.5.26"

/*
* According to the Atom N270 datasheet,
Expand Down Expand Up @@ -83,8 +83,8 @@ static int kernelmode;
#endif

static unsigned int interval = 10;
static unsigned int fanon = 63000;
static unsigned int fanoff = 58000;
static unsigned int fanon = 60000;
static unsigned int fanoff = 53000;
static unsigned int verbose;
static unsigned int fanstate = ACERHDF_FAN_AUTO;
static char force_bios[16];
Expand Down Expand Up @@ -150,6 +150,8 @@ static const struct bios_settings_t bios_tbl[] = {
{"Acer", "AOA150", "v0.3308", 0x55, 0x58, {0x20, 0x00} },
{"Acer", "AOA150", "v0.3309", 0x55, 0x58, {0x20, 0x00} },
{"Acer", "AOA150", "v0.3310", 0x55, 0x58, {0x20, 0x00} },
/* LT1005u */
{"Acer", "LT-10Q", "v0.3310", 0x55, 0x58, {0x20, 0x00} },
/* Acer 1410 */
{"Acer", "Aspire 1410", "v0.3108", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1410", "v0.3113", 0x55, 0x58, {0x9e, 0x00} },
Expand All @@ -161,6 +163,7 @@ static const struct bios_settings_t bios_tbl[] = {
{"Acer", "Aspire 1410", "v1.3303", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1410", "v1.3308", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1410", "v1.3310", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1410", "v1.3314", 0x55, 0x58, {0x9e, 0x00} },
/* Acer 1810xx */
{"Acer", "Aspire 1810TZ", "v0.3108", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1810T", "v0.3108", 0x55, 0x58, {0x9e, 0x00} },
Expand All @@ -183,29 +186,44 @@ static const struct bios_settings_t bios_tbl[] = {
{"Acer", "Aspire 1810TZ", "v1.3310", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1810T", "v1.3310", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1810TZ", "v1.3314", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1810T", "v1.3314", 0x55, 0x58, {0x9e, 0x00} },
/* Acer 531 */
{"Acer", "AO531h", "v0.3104", 0x55, 0x58, {0x20, 0x00} },
{"Acer", "AO531h", "v0.3201", 0x55, 0x58, {0x20, 0x00} },
{"Acer", "AO531h", "v0.3304", 0x55, 0x58, {0x20, 0x00} },
/* Acer 751 */
{"Acer", "AO751h", "V0.3212", 0x55, 0x58, {0x21, 0x00} },
/* Acer 1825 */
{"Acer", "Aspire 1825PTZ", "V1.3118", 0x55, 0x58, {0x9e, 0x00} },
{"Acer", "Aspire 1825PTZ", "V1.3127", 0x55, 0x58, {0x9e, 0x00} },
/* Acer TravelMate 7730 */
{"Acer", "TravelMate 7730G", "v0.3509", 0x55, 0x58, {0xaf, 0x00} },
/* Gateway */
{"Gateway", "AOA110", "v0.3103", 0x55, 0x58, {0x21, 0x00} },
{"Gateway", "AOA150", "v0.3103", 0x55, 0x58, {0x20, 0x00} },
{"Gateway", "LT31", "v1.3103", 0x55, 0x58, {0x9e, 0x00} },
{"Gateway", "LT31", "v1.3201", 0x55, 0x58, {0x9e, 0x00} },
{"Gateway", "LT31", "v1.3302", 0x55, 0x58, {0x9e, 0x00} },
{"Gateway", "AOA110", "v0.3103", 0x55, 0x58, {0x21, 0x00} },
{"Gateway", "AOA150", "v0.3103", 0x55, 0x58, {0x20, 0x00} },
{"Gateway", "LT31", "v1.3103", 0x55, 0x58, {0x9e, 0x00} },
{"Gateway", "LT31", "v1.3201", 0x55, 0x58, {0x9e, 0x00} },
{"Gateway", "LT31", "v1.3302", 0x55, 0x58, {0x9e, 0x00} },
{"Gateway", "LT31", "v1.3303t", 0x55, 0x58, {0x9e, 0x00} },
/* Packard Bell */
{"Packard Bell", "DOA150", "v0.3104", 0x55, 0x58, {0x21, 0x00} },
{"Packard Bell", "DOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00} },
{"Packard Bell", "AOA110", "v0.3105", 0x55, 0x58, {0x21, 0x00} },
{"Packard Bell", "AOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00} },
{"Packard Bell", "DOTMU", "v1.3303", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3120", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3108", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3113", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3115", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3117", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3119", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v1.3204", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMA", "v1.3201", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMA", "v1.3302", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOA150", "v0.3104", 0x55, 0x58, {0x21, 0x00} },
{"Packard Bell", "DOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00} },
{"Packard Bell", "AOA110", "v0.3105", 0x55, 0x58, {0x21, 0x00} },
{"Packard Bell", "AOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00} },
{"Packard Bell", "ENBFT", "V1.3118", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "ENBFT", "V1.3127", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v1.3303", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3120", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3108", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3113", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3115", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3117", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v0.3119", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMU", "v1.3204", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMA", "v1.3201", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMA", "v1.3302", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTMA", "v1.3303t", 0x55, 0x58, {0x9e, 0x00} },
{"Packard Bell", "DOTVR46", "v1.3308", 0x55, 0x58, {0x9e, 0x00} },
/* pewpew-terminator */
{"", "", "", 0, 0, {0, 0} }
};
Expand Down Expand Up @@ -701,15 +719,20 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("Peter Feuerer");
MODULE_DESCRIPTION("Aspire One temperature and fan driver");
MODULE_ALIAS("dmi:*:*Acer*:pnAOA*:");
MODULE_ALIAS("dmi:*:*Acer*:pnAO751h*:");
MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1410*:");
MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1810*:");
MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1825PTZ:");
MODULE_ALIAS("dmi:*:*Acer*:pnAO531*:");
MODULE_ALIAS("dmi:*:*Acer*:TravelMate*7730G:");
MODULE_ALIAS("dmi:*:*Gateway*:pnAOA*:");
MODULE_ALIAS("dmi:*:*Gateway*:pnLT31*:");
MODULE_ALIAS("dmi:*:*Packard*Bell*:pnAOA*:");
MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOA*:");
MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMU*:");
MODULE_ALIAS("dmi:*:*Packard*Bell*:pnENBFT*:");
MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMA*:");
MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTVR46*:");

module_init(acerhdf_init);
module_exit(acerhdf_exit);
1 change: 1 addition & 0 deletions drivers/rtc/rtc-ds1307.c
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Original file line number Diff line number Diff line change
Expand Up @@ -902,6 +902,7 @@ static int __devinit ds1307_probe(struct i2c_client *client,
}
ds1307->nvram->attr.name = "nvram";
ds1307->nvram->attr.mode = S_IRUGO | S_IWUSR;
sysfs_bin_attr_init(ds1307->nvram);
ds1307->nvram->read = ds1307_nvram_read,
ds1307->nvram->write = ds1307_nvram_write,
ds1307->nvram->size = chip->nvram_size;
Expand Down
1 change: 0 additions & 1 deletion fs/buffer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -985,7 +985,6 @@ grow_dev_page(struct block_device *bdev, sector_t block,
return page;

failed:
BUG();
unlock_page(page);
page_cache_release(page);
return NULL;
Expand Down
4 changes: 3 additions & 1 deletion fs/eventpoll.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1663,8 +1663,10 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd,
if (op == EPOLL_CTL_ADD) {
if (is_file_epoll(tfile)) {
error = -ELOOP;
if (ep_loop_check(ep, tfile) != 0)
if (ep_loop_check(ep, tfile) != 0) {
clear_tfile_check_list();
goto error_tgt_fput;
}
} else
list_add(&tfile->f_tfile_llink, &tfile_check_list);
}
Expand Down
1 change: 1 addition & 0 deletions fs/hugetlbfs/inode.c
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Original file line number Diff line number Diff line change
Expand Up @@ -485,6 +485,7 @@ static struct inode *hugetlbfs_get_root(struct super_block *sb,
inode->i_fop = &simple_dir_operations;
/* directory inodes start off with i_nlink == 2 (for "." entry) */
inc_nlink(inode);
lockdep_annotate_inode_mutex_key(inode);
}
return inode;
}
Expand Down
3 changes: 0 additions & 3 deletions fs/proc/task_mmu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -597,9 +597,6 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
if (!page)
continue;

if (PageReserved(page))
continue;

/* Clear accessed and referenced bits. */
ptep_test_and_clear_young(vma, addr, pte);
ClearPageReferenced(page);
Expand Down
5 changes: 3 additions & 2 deletions include/linux/vm_event_item.h
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Original file line number Diff line number Diff line change
Expand Up @@ -26,13 +26,14 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
PGFREE, PGACTIVATE, PGDEACTIVATE,
PGFAULT, PGMAJFAULT,
FOR_ALL_ZONES(PGREFILL),
FOR_ALL_ZONES(PGSTEAL),
FOR_ALL_ZONES(PGSTEAL_KSWAPD),
FOR_ALL_ZONES(PGSTEAL_DIRECT),
FOR_ALL_ZONES(PGSCAN_KSWAPD),
FOR_ALL_ZONES(PGSCAN_DIRECT),
#ifdef CONFIG_NUMA
PGSCAN_ZONE_RECLAIM_FAILED,
#endif
PGINODESTEAL, SLABS_SCANNED, KSWAPD_STEAL, KSWAPD_INODESTEAL,
PGINODESTEAL, SLABS_SCANNED, KSWAPD_INODESTEAL,
KSWAPD_LOW_WMARK_HIT_QUICKLY, KSWAPD_HIGH_WMARK_HIT_QUICKLY,
KSWAPD_SKIP_CONGESTION_WAIT,
PAGEOUTRUN, ALLOCSTALL, PGROTATED,
Expand Down
2 changes: 1 addition & 1 deletion mm/hugetlb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -532,7 +532,7 @@ static struct page *dequeue_huge_page_vma(struct hstate *h,
struct vm_area_struct *vma,
unsigned long address, int avoid_reserve)
{
struct page *page;
struct page *page = NULL;
struct mempolicy *mpol;
nodemask_t *nodemask;
struct zonelist *zonelist;
Expand Down
11 changes: 7 additions & 4 deletions mm/mempolicy.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1361,11 +1361,14 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode,

mm = get_task_mm(task);
put_task_struct(task);
if (mm)
err = do_migrate_pages(mm, old, new,
capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE);
else

if (!mm) {
err = -EINVAL;
goto out;
}

err = do_migrate_pages(mm, old, new,
capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE);

mmput(mm);
out:
Expand Down
16 changes: 8 additions & 8 deletions mm/migrate.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1388,14 +1388,14 @@ SYSCALL_DEFINE6(move_pages, pid_t, pid, unsigned long, nr_pages,
mm = get_task_mm(task);
put_task_struct(task);

if (mm) {
if (nodes)
err = do_pages_move(mm, task_nodes, nr_pages, pages,
nodes, status, flags);
else
err = do_pages_stat(mm, nr_pages, pages, status);
} else
err = -EINVAL;
if (!mm)
return -EINVAL;

if (nodes)
err = do_pages_move(mm, task_nodes, nr_pages, pages,
nodes, status, flags);
else
err = do_pages_stat(mm, nr_pages, pages, status);

mmput(mm);
return err;
Expand Down
11 changes: 8 additions & 3 deletions mm/vmscan.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1568,9 +1568,14 @@ shrink_inactive_list(unsigned long nr_to_scan, struct mem_cgroup_zone *mz,
reclaim_stat->recent_scanned[0] += nr_anon;
reclaim_stat->recent_scanned[1] += nr_file;

if (current_is_kswapd())
__count_vm_events(KSWAPD_STEAL, nr_reclaimed);
__count_zone_vm_events(PGSTEAL, zone, nr_reclaimed);
if (global_reclaim(sc)) {
if (current_is_kswapd())
__count_zone_vm_events(PGSTEAL_KSWAPD, zone,
nr_reclaimed);
else
__count_zone_vm_events(PGSTEAL_DIRECT, zone,
nr_reclaimed);
}

putback_inactive_pages(mz, &page_list);

Expand Down
4 changes: 2 additions & 2 deletions mm/vmstat.c
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Original file line number Diff line number Diff line change
Expand Up @@ -738,7 +738,8 @@ const char * const vmstat_text[] = {
"pgmajfault",

TEXTS_FOR_ZONES("pgrefill")
TEXTS_FOR_ZONES("pgsteal")
TEXTS_FOR_ZONES("pgsteal_kswapd")
TEXTS_FOR_ZONES("pgsteal_direct")
TEXTS_FOR_ZONES("pgscan_kswapd")
TEXTS_FOR_ZONES("pgscan_direct")

Expand All @@ -747,7 +748,6 @@ const char * const vmstat_text[] = {
#endif
"pginodesteal",
"slabs_scanned",
"kswapd_steal",
"kswapd_inodesteal",
"kswapd_low_wmark_hit_quickly",
"kswapd_high_wmark_hit_quickly",
Expand Down

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