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-rw-r--r--target/linux/generic/patches-2.6.33/040-compcache_swap_notify_core_support.patch30
-rw-r--r--target/linux/generic/patches-2.6.34/040-compcache_swap_notify_core_support.patch30
2 files changed, 60 insertions, 0 deletions
diff --git a/target/linux/generic/patches-2.6.33/040-compcache_swap_notify_core_support.patch b/target/linux/generic/patches-2.6.33/040-compcache_swap_notify_core_support.patch
new file mode 100644
index 000000000..0372e2065
--- /dev/null
+++ b/target/linux/generic/patches-2.6.33/040-compcache_swap_notify_core_support.patch
@@ -0,0 +1,30 @@
+--- a/include/linux/blkdev.h
++++ b/include/linux/blkdev.h
+@@ -1301,6 +1301,8 @@ struct block_device_operations {
+ unsigned long long);
+ int (*revalidate_disk) (struct gendisk *);
+ int (*getgeo)(struct block_device *, struct hd_geometry *);
++ /* this callback is with swap_lock and sometimes page table lock held */
++ void (*swap_slot_free_notify) (struct block_device *, unsigned long);
+ struct module *owner;
+ };
+
+--- a/mm/swapfile.c
++++ b/mm/swapfile.c
+@@ -574,6 +574,7 @@ static unsigned char swap_entry_free(struct swap_info_struct *p,
+
+ /* free if no reference */
+ if (!usage) {
++ struct gendisk *disk = p->bdev->bd_disk;
+ if (offset < p->lowest_bit)
+ p->lowest_bit = offset;
+ if (offset > p->highest_bit)
+@@ -583,6 +584,8 @@ static unsigned char swap_entry_free(struct swap_info_struct *p,
+ swap_list.next = p->type;
+ nr_swap_pages++;
+ p->inuse_pages--;
++ if (disk->fops->swap_slot_free_notify)
++ disk->fops->swap_slot_free_notify(p->bdev, offset);
+ }
+
+ return usage;
diff --git a/target/linux/generic/patches-2.6.34/040-compcache_swap_notify_core_support.patch b/target/linux/generic/patches-2.6.34/040-compcache_swap_notify_core_support.patch
new file mode 100644
index 000000000..0372e2065
--- /dev/null
+++ b/target/linux/generic/patches-2.6.34/040-compcache_swap_notify_core_support.patch
@@ -0,0 +1,30 @@
+--- a/include/linux/blkdev.h
++++ b/include/linux/blkdev.h
+@@ -1301,6 +1301,8 @@ struct block_device_operations {
+ unsigned long long);
+ int (*revalidate_disk) (struct gendisk *);
+ int (*getgeo)(struct block_device *, struct hd_geometry *);
++ /* this callback is with swap_lock and sometimes page table lock held */
++ void (*swap_slot_free_notify) (struct block_device *, unsigned long);
+ struct module *owner;
+ };
+
+--- a/mm/swapfile.c
++++ b/mm/swapfile.c
+@@ -574,6 +574,7 @@ static unsigned char swap_entry_free(struct swap_info_struct *p,
+
+ /* free if no reference */
+ if (!usage) {
++ struct gendisk *disk = p->bdev->bd_disk;
+ if (offset < p->lowest_bit)
+ p->lowest_bit = offset;
+ if (offset > p->highest_bit)
+@@ -583,6 +584,8 @@ static unsigned char swap_entry_free(struct swap_info_struct *p,
+ swap_list.next = p->type;
+ nr_swap_pages++;
+ p->inuse_pages--;
++ if (disk->fops->swap_slot_free_notify)
++ disk->fops->swap_slot_free_notify(p->bdev, offset);
+ }
+
+ return usage;