Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 443b3b1..73cd507 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -39,8 +39,8 @@
#include <linux/highmem.h>
#include <linux/string.h>
#include <linux/slab.h>
+#include <linux/pgtable.h>
#include <asm/tlbflush.h>
-#include <asm/pgtable.h>
#include <linux/cpumask.h>
#include <linux/cpu.h>
#include <linux/vmalloc.h>
@@ -79,7 +79,7 @@
/*
* Object location (<PFN>, <obj_idx>) is encoded as
- * as single (unsigned long) handle value.
+ * a single (unsigned long) handle value.
*
* Note that object index <obj_idx> starts from 0.
*
@@ -420,7 +420,7 @@
case ZPOOL_MM_WO:
zs_mm = ZS_MM_WO;
break;
- case ZPOOL_MM_RW: /* fall through */
+ case ZPOOL_MM_RW:
default:
zs_mm = ZS_MM_RW;
break;
@@ -887,12 +887,12 @@
return bit_spin_trylock(HANDLE_PIN_BIT, (unsigned long *)handle);
}
-static void pin_tag(unsigned long handle)
+static void pin_tag(unsigned long handle) __acquires(bitlock)
{
bit_spin_lock(HANDLE_PIN_BIT, (unsigned long *)handle);
}
-static void unpin_tag(unsigned long handle)
+static void unpin_tag(unsigned long handle) __releases(bitlock)
{
bit_spin_unlock(HANDLE_PIN_BIT, (unsigned long *)handle);
}
@@ -1787,12 +1787,12 @@
rwlock_init(&zspage->lock);
}
-static void migrate_read_lock(struct zspage *zspage)
+static void migrate_read_lock(struct zspage *zspage) __acquires(&zspage->lock)
{
read_lock(&zspage->lock);
}
-static void migrate_read_unlock(struct zspage *zspage)
+static void migrate_read_unlock(struct zspage *zspage) __releases(&zspage->lock)
{
read_unlock(&zspage->lock);
}
@@ -1835,10 +1835,11 @@
VM_BUG_ON(atomic_long_read(&pool->isolated_pages) <= 0);
atomic_long_dec(&pool->isolated_pages);
/*
- * There's no possibility of racing, since wait_for_isolated_drain()
- * checks the isolated count under &class->lock after enqueuing
- * on migration_wait.
+ * Checking pool->destroying must happen after atomic_long_dec()
+ * for pool->isolated_pages above. Paired with the smp_mb() in
+ * zs_unregister_migration().
*/
+ smp_mb__after_atomic();
if (atomic_long_read(&pool->isolated_pages) == 0 && pool->destroying)
wake_up_all(&pool->migration_wait);
}