Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin:
Blackfin: debug-mmrs: include RSI_PID[4567] MMRs
Blackfin: bf51x: fix up RSI_PID# MMR defines
Blackfin: bf52x/bf54x: fix up usb MMR defines
Blackfin: debug-mmrs: fix typos with gptimers/mdma/ppi
Blackfin: gptimers: add structure for hardware register layout
Blackfin: wire up new sendmmsg syscall
Blackfin: mach/bfin_serial_5xx.h: punt now-unused header
Blackfin: bfin_serial.h: turn default port wrappers into stubs
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index f46855c..ad747dc 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -381,11 +381,6 @@
return err;
}
-/**
- * proc_scsi_show - show contents of /proc/scsi/scsi (attached devices)
- * @s: output goes here
- * @p: not used
- */
static int always_match(struct device *dev, void *data)
{
return 1;
diff --git a/mm/rmap.c b/mm/rmap.c
index 3a39b51..6bada99 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -405,6 +405,7 @@
struct anon_vma *page_lock_anon_vma(struct page *page)
{
struct anon_vma *anon_vma = NULL;
+ struct anon_vma *root_anon_vma;
unsigned long anon_mapping;
rcu_read_lock();
@@ -415,13 +416,15 @@
goto out;
anon_vma = (struct anon_vma *) (anon_mapping - PAGE_MAPPING_ANON);
- if (mutex_trylock(&anon_vma->root->mutex)) {
+ root_anon_vma = ACCESS_ONCE(anon_vma->root);
+ if (mutex_trylock(&root_anon_vma->mutex)) {
/*
- * If we observe a !0 refcount, then holding the lock ensures
- * the anon_vma will not go away, see __put_anon_vma().
+ * If the page is still mapped, then this anon_vma is still
+ * its anon_vma, and holding the mutex ensures that it will
+ * not go away, see __put_anon_vma().
*/
- if (!atomic_read(&anon_vma->refcount)) {
- anon_vma_unlock(anon_vma);
+ if (!page_mapped(page)) {
+ mutex_unlock(&root_anon_vma->mutex);
anon_vma = NULL;
}
goto out;
@@ -1014,7 +1017,7 @@
return;
VM_BUG_ON(!PageLocked(page));
- VM_BUG_ON(address < vma->vm_start || address >= vma->vm_end);
+ /* address might be in next vma when migration races vma_adjust */
if (first)
__page_set_anon_rmap(page, vma, address, exclusive);
else
@@ -1709,7 +1712,7 @@
BUG_ON(!PageLocked(page));
BUG_ON(!anon_vma);
- BUG_ON(address < vma->vm_start || address >= vma->vm_end);
+ /* address might be in next vma when migration races vma_adjust */
first = atomic_inc_and_test(&page->_mapcount);
if (first)
__hugepage_set_anon_rmap(page, vma, address, 0);
diff --git a/mm/shmem.c b/mm/shmem.c
index 1acfb26..d221a1c 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1114,8 +1114,8 @@
delete_from_page_cache(page);
shmem_swp_set(info, entry, swap.val);
shmem_swp_unmap(entry);
- spin_unlock(&info->lock);
swap_shmem_alloc(swap);
+ spin_unlock(&info->lock);
BUG_ON(page_mapped(page));
swap_writepage(page, wbc);
return 0;