diff options
| -rw-r--r-- | convert/source-fs.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/convert/source-fs.c b/convert/source-fs.c index 59e36095..4755efb2 100644 --- a/convert/source-fs.c +++ b/convert/source-fs.c @@ -28,18 +28,16 @@ const struct simple_range btrfs_reserved_ranges[3] = { { BTRFS_SB_MIRROR_OFFSET(2), SZ_64K } }; -static int intersect_with_sb(u64 bytenr, u64 num_bytes) +static u64 intersect_with_reserved(u64 bytenr, u64 num_bytes) { int i; - u64 offset; - for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) { - offset = btrfs_sb_offset(i); - offset &= ~((u64)BTRFS_STRIPE_LEN - 1); + for (i = 0; i < ARRAY_SIZE(btrfs_reserved_ranges); i++) { + const struct simple_range *range = &btrfs_reserved_ranges[i]; - if (bytenr < offset + BTRFS_STRIPE_LEN && - bytenr + num_bytes > offset) - return 1; + if (bytenr < range_end(range) && + bytenr + num_bytes >= range->start) + return range_end(range); } return 0; } @@ -64,15 +62,15 @@ int block_iterate_proc(u64 disk_block, u64 file_block, struct blk_iterate_data *idata) { int ret = 0; - int sb_region; + u64 reserved_boundary; int do_barrier; struct btrfs_root *root = idata->root; struct btrfs_block_group_cache *cache; u32 sectorsize = root->fs_info->sectorsize; u64 bytenr = disk_block * sectorsize; - sb_region = intersect_with_sb(bytenr, sectorsize); - do_barrier = sb_region || disk_block >= idata->boundary; + reserved_boundary = intersect_with_reserved(bytenr, sectorsize); + do_barrier = reserved_boundary || disk_block >= idata->boundary; if ((idata->num_blocks > 0 && do_barrier) || (file_block > idata->first_block + idata->num_blocks) || (disk_block != idata->disk_block + idata->num_blocks)) { @@ -92,9 +90,8 @@ int block_iterate_proc(u64 disk_block, u64 file_block, goto fail; } - if (sb_region) { - bytenr += BTRFS_STRIPE_LEN - 1; - bytenr &= ~((u64)BTRFS_STRIPE_LEN - 1); + if (reserved_boundary) { + bytenr = reserved_boundary; } else { cache = btrfs_lookup_block_group(root->fs_info, bytenr); BUG_ON(!cache); |