diff options
| -rw-r--r-- | fs/btrfs/tests/extent-io-tests.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/fs/btrfs/tests/extent-io-tests.c b/fs/btrfs/tests/extent-io-tests.c index c2e72e7a8ff0..a232b15b8021 100644 --- a/fs/btrfs/tests/extent-io-tests.c +++ b/fs/btrfs/tests/extent-io-tests.c @@ -56,6 +56,54 @@ static noinline int process_page_range(struct inode *inode, u64 start, u64 end, return count; } +#define STATE_FLAG_STR_LEN 256 + +#define PRINT_ONE_FLAG(state, dest, cur, name) \ +({ \ + if (state->state & EXTENT_##name) \ + cur += scnprintf(dest + cur, STATE_FLAG_STR_LEN - cur, \ + "%s" #name, cur == 0 ? "" : "|"); \ +}) + +static void extent_flag_to_str(const struct extent_state *state, char *dest) +{ + int cur = 0; + + dest[0] = 0; + PRINT_ONE_FLAG(state, dest, cur, DIRTY); + PRINT_ONE_FLAG(state, dest, cur, UPTODATE); + PRINT_ONE_FLAG(state, dest, cur, LOCKED); + PRINT_ONE_FLAG(state, dest, cur, NEW); + PRINT_ONE_FLAG(state, dest, cur, DELALLOC); + PRINT_ONE_FLAG(state, dest, cur, DEFRAG); + PRINT_ONE_FLAG(state, dest, cur, BOUNDARY); + PRINT_ONE_FLAG(state, dest, cur, NODATASUM); + PRINT_ONE_FLAG(state, dest, cur, CLEAR_META_RESV); + PRINT_ONE_FLAG(state, dest, cur, NEED_WAIT); + PRINT_ONE_FLAG(state, dest, cur, DAMAGED); + PRINT_ONE_FLAG(state, dest, cur, NORESERVE); + PRINT_ONE_FLAG(state, dest, cur, QGROUP_RESERVED); + PRINT_ONE_FLAG(state, dest, cur, CLEAR_DATA_RESV); +} + +static void dump_extent_io_tree(const struct extent_io_tree *tree) +{ + struct rb_node *node; + char flags_str[STATE_FLAG_STR_LEN]; + + node = rb_first(&tree->state); + test_msg("io tree content:"); + while (node) { + struct extent_state *state; + + state = rb_entry(node, struct extent_state, rb_node); + extent_flag_to_str(state, flags_str); + test_msg(" start=%llu len=%llu flags=%s", state->start, + state->end + 1 - state->start, flags_str); + node = rb_next(node); + } +} + static int test_find_delalloc(u32 sectorsize) { struct inode *inode; @@ -258,6 +306,8 @@ static int test_find_delalloc(u32 sectorsize) } ret = 0; out_bits: + if (ret) + dump_extent_io_tree(tmp); clear_extent_bits(tmp, 0, total_dirty - 1, (unsigned)-1); out: if (locked_page) @@ -534,6 +584,8 @@ static int test_find_first_clear_extent_bit(void) ret = 0; out: + if (ret) + dump_extent_io_tree(&tree); clear_extent_bits(&tree, 0, (u64)-1, CHUNK_TRIMMED | CHUNK_ALLOCATED); return ret; |