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Diffstat (limited to 'fs/xfs/scrub/bitmap.h')
-rw-r--r--fs/xfs/scrub/bitmap.h111
1 files changed, 34 insertions, 77 deletions
diff --git a/fs/xfs/scrub/bitmap.h b/fs/xfs/scrub/bitmap.h
index 4fe58bad67..2df8911606 100644
--- a/fs/xfs/scrub/bitmap.h
+++ b/fs/xfs/scrub/bitmap.h
@@ -6,17 +6,19 @@
#ifndef __XFS_SCRUB_BITMAP_H__
#define __XFS_SCRUB_BITMAP_H__
-struct xbitmap {
+/* u64 bitmap */
+
+struct xbitmap64 {
struct rb_root_cached xb_root;
};
-void xbitmap_init(struct xbitmap *bitmap);
-void xbitmap_destroy(struct xbitmap *bitmap);
+void xbitmap64_init(struct xbitmap64 *bitmap);
+void xbitmap64_destroy(struct xbitmap64 *bitmap);
-int xbitmap_clear(struct xbitmap *bitmap, uint64_t start, uint64_t len);
-int xbitmap_set(struct xbitmap *bitmap, uint64_t start, uint64_t len);
-int xbitmap_disunion(struct xbitmap *bitmap, struct xbitmap *sub);
-uint64_t xbitmap_hweight(struct xbitmap *bitmap);
+int xbitmap64_clear(struct xbitmap64 *bitmap, uint64_t start, uint64_t len);
+int xbitmap64_set(struct xbitmap64 *bitmap, uint64_t start, uint64_t len);
+int xbitmap64_disunion(struct xbitmap64 *bitmap, struct xbitmap64 *sub);
+uint64_t xbitmap64_hweight(struct xbitmap64 *bitmap);
/*
* Return codes for the bitmap iterator functions are 0 to continue iterating,
@@ -25,84 +27,39 @@ uint64_t xbitmap_hweight(struct xbitmap *bitmap);
* iteration, because neither bitmap iterator ever generates that error code on
* its own. Callers must not modify the bitmap while walking it.
*/
-typedef int (*xbitmap_walk_fn)(uint64_t start, uint64_t len, void *priv);
-int xbitmap_walk(struct xbitmap *bitmap, xbitmap_walk_fn fn,
+typedef int (*xbitmap64_walk_fn)(uint64_t start, uint64_t len, void *priv);
+int xbitmap64_walk(struct xbitmap64 *bitmap, xbitmap64_walk_fn fn,
void *priv);
-bool xbitmap_empty(struct xbitmap *bitmap);
-bool xbitmap_test(struct xbitmap *bitmap, uint64_t start, uint64_t *len);
+bool xbitmap64_empty(struct xbitmap64 *bitmap);
+bool xbitmap64_test(struct xbitmap64 *bitmap, uint64_t start, uint64_t *len);
-/* Bitmaps, but for type-checked for xfs_agblock_t */
+/* u32 bitmap */
-struct xagb_bitmap {
- struct xbitmap agbitmap;
+struct xbitmap32 {
+ struct rb_root_cached xb_root;
};
-static inline void xagb_bitmap_init(struct xagb_bitmap *bitmap)
-{
- xbitmap_init(&bitmap->agbitmap);
-}
-
-static inline void xagb_bitmap_destroy(struct xagb_bitmap *bitmap)
-{
- xbitmap_destroy(&bitmap->agbitmap);
-}
-
-static inline int xagb_bitmap_clear(struct xagb_bitmap *bitmap,
- xfs_agblock_t start, xfs_extlen_t len)
-{
- return xbitmap_clear(&bitmap->agbitmap, start, len);
-}
-static inline int xagb_bitmap_set(struct xagb_bitmap *bitmap,
- xfs_agblock_t start, xfs_extlen_t len)
-{
- return xbitmap_set(&bitmap->agbitmap, start, len);
-}
-
-static inline bool
-xagb_bitmap_test(
- struct xagb_bitmap *bitmap,
- xfs_agblock_t start,
- xfs_extlen_t *len)
-{
- uint64_t biglen = *len;
- bool ret;
-
- ret = xbitmap_test(&bitmap->agbitmap, start, &biglen);
-
- if (start + biglen >= UINT_MAX) {
- ASSERT(0);
- biglen = UINT_MAX - start;
- }
-
- *len = biglen;
- return ret;
-}
-
-static inline int xagb_bitmap_disunion(struct xagb_bitmap *bitmap,
- struct xagb_bitmap *sub)
-{
- return xbitmap_disunion(&bitmap->agbitmap, &sub->agbitmap);
-}
+void xbitmap32_init(struct xbitmap32 *bitmap);
+void xbitmap32_destroy(struct xbitmap32 *bitmap);
-static inline uint32_t xagb_bitmap_hweight(struct xagb_bitmap *bitmap)
-{
- return xbitmap_hweight(&bitmap->agbitmap);
-}
-static inline bool xagb_bitmap_empty(struct xagb_bitmap *bitmap)
-{
- return xbitmap_empty(&bitmap->agbitmap);
-}
+int xbitmap32_clear(struct xbitmap32 *bitmap, uint32_t start, uint32_t len);
+int xbitmap32_set(struct xbitmap32 *bitmap, uint32_t start, uint32_t len);
+int xbitmap32_disunion(struct xbitmap32 *bitmap, struct xbitmap32 *sub);
+uint32_t xbitmap32_hweight(struct xbitmap32 *bitmap);
-static inline int xagb_bitmap_walk(struct xagb_bitmap *bitmap,
- xbitmap_walk_fn fn, void *priv)
-{
- return xbitmap_walk(&bitmap->agbitmap, fn, priv);
-}
+/*
+ * Return codes for the bitmap iterator functions are 0 to continue iterating,
+ * and non-zero to stop iterating. Any non-zero value will be passed up to the
+ * iteration caller. The special value -ECANCELED can be used to stop
+ * iteration, because neither bitmap iterator ever generates that error code on
+ * its own. Callers must not modify the bitmap while walking it.
+ */
+typedef int (*xbitmap32_walk_fn)(uint32_t start, uint32_t len, void *priv);
+int xbitmap32_walk(struct xbitmap32 *bitmap, xbitmap32_walk_fn fn,
+ void *priv);
-int xagb_bitmap_set_btblocks(struct xagb_bitmap *bitmap,
- struct xfs_btree_cur *cur);
-int xagb_bitmap_set_btcur_path(struct xagb_bitmap *bitmap,
- struct xfs_btree_cur *cur);
+bool xbitmap32_empty(struct xbitmap32 *bitmap);
+bool xbitmap32_test(struct xbitmap32 *bitmap, uint32_t start, uint32_t *len);
#endif /* __XFS_SCRUB_BITMAP_H__ */