btrfs-progs: lowmem check: Fix false alert about file extent interrupt

[platform/upstream/btrfs-progs.git] / volumes.h

diff --git a/volumes.h b/volumes.h
index af7182b..699b0ba 100644 (file)
--- a/volumes.h
+++ b/volumes.h
@@ -22,7 +22,7 @@
 #include "kerncompat.h"
 #include "ctree.h"
 
-#define BTRFS_STRIPE_LEN       (64 * 1024)
+#define BTRFS_STRIPE_LEN       SZ_64K
 
 struct btrfs_device {
        struct list_head dev_list;
@@ -155,11 +155,28 @@ struct map_lookup {
  * Check if the given range cross stripes.
  * To ensure kernel scrub won't causing bug on with METADATA in mixed
  * block group
+ *
+ * Return 1 if the range crosses STRIPE boundary
+ * Return 0 if the range doesn't cross STRIPE boundary or it
+ * doesn't belong to any block group (no boundary to cross)
  */
-static inline int check_crossing_stripes(u64 start, u64 len)
+static inline int check_crossing_stripes(struct btrfs_fs_info *fs_info,
+                                        u64 start, u64 len)
 {
-       return (start / BTRFS_STRIPE_LEN) !=
-              ((start + len - 1) / BTRFS_STRIPE_LEN);
+       struct btrfs_block_group_cache *bg_cache;
+       u64 bg_offset;
+
+       bg_cache = btrfs_lookup_block_group(fs_info, start);
+       /*
+        * Does not belong to block group, no boundary to cross
+        * although it's a bigger problem, but here we don't care.
+        */
+       if (!bg_cache)
+               return 0;
+       bg_offset = start - bg_cache->key.objectid;
+
+       return (bg_offset / BTRFS_STRIPE_LEN !=
+               (bg_offset + len - 1) / BTRFS_STRIPE_LEN);
 }
 
 int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
@@ -213,8 +230,7 @@ int btrfs_scan_one_device(int fd, const char *path,
                          u64 *total_devs, u64 super_offset, unsigned sbflags);
 int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len);
 struct list_head *btrfs_scanned_uuids(void);
-int btrfs_add_system_chunk(struct btrfs_trans_handle *trans,
-                          struct btrfs_root *root, struct btrfs_key *key,
+int btrfs_add_system_chunk(struct btrfs_root *root, struct btrfs_key *key,
                           struct btrfs_chunk *chunk, int item_size);
 int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset);
 struct btrfs_device *
@@ -226,4 +242,8 @@ int write_raid56_with_parity(struct btrfs_fs_info *info,
                             struct extent_buffer *eb,
                             struct btrfs_multi_bio *multi,
                             u64 stripe_len, u64 *raid_map);
+int btrfs_check_chunk_valid(struct btrfs_root *root,
+                           struct extent_buffer *leaf,
+                           struct btrfs_chunk *chunk,
+                           int slot, u64 logical);
 #endif