Btrfs: Fixes for 2.6.28-rc API changes
* open/close_bdev_excl -> open/close_bdev_exclusive
* blkdev_issue_discard takes a GFP mask now
* Fix blkdev_issue_discard usage now that it is enabled
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index ee73efe..62d4970 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -28,6 +28,7 @@
#include "volumes.h"
#include "locking.h"
#include "ref-cache.h"
+#include "compat.h"
#define PENDING_EXTENT_INSERT 0
#define PENDING_EXTENT_DELETE 1
@@ -899,6 +900,17 @@
return ret;
}
+static void btrfs_issue_discard(struct block_device *bdev,
+ u64 start, u64 len)
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
+ blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL);
+#else
+ blkdev_issue_discard(bdev, start >> 9, len >> 9);
+#endif
+}
+
+
static int noinline free_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root,
struct list_head *del_list)
@@ -1108,6 +1120,7 @@
BUG_ON(ret);
#ifdef BIO_RW_DISCARD
+ map_length = tmp->num_bytes;
ret = btrfs_map_block(&info->mapping_tree, READ,
tmp->bytenr, &map_length, &multi,
0);
@@ -1115,16 +1128,16 @@
struct btrfs_bio_stripe *stripe;
int i;
- stripe = multi->stripe;
+ stripe = multi->stripes;
if (map_length > tmp->num_bytes)
map_length = tmp->num_bytes;
for (i = 0; i < multi->num_stripes;
i++, stripe++)
- blkdev_issue_discard(stripe->dev->bdev,
- stripe->physical >> 9,
- map_length >> 9);
+ btrfs_issue_discard(stripe->dev->bdev,
+ stripe->physical,
+ map_length);
kfree(multi);
}
#endif
@@ -2498,9 +2511,9 @@
map_length = num_bytes;
for (i = 0; i < multi->num_stripes; i++, stripe++) {
- blkdev_issue_discard(stripe->dev->bdev,
- stripe->physical >> 9,
- map_length >> 9);
+ btrfs_issue_discard(stripe->dev->bdev,
+ stripe->physical,
+ map_length);
}
kfree(multi);
}