From 202f64ef427cce8478d9cfc1a96970db066b1ece Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Mon, 5 Aug 2019 10:57:41 +0100 Subject: Btrfs: make test_find_first_clear_extent_bit fail on incorrect results If any call to find_first_clear_extent_bit() returns an unexpected result, the test should fail and not just print an error message, otherwise it makes detection of regressions much harder to notice. Fixes: 1eaebb341d2b41 ("btrfs: Don't trim returned range based on input value in find_first_clear_extent_bit") Reviewed-by: Nikolay Borisov Signed-off-by: Filipe Manana Signed-off-by: David Sterba --- fs/btrfs/tests/extent-io-tests.c | 29 ++++++++++++++++++++++------- 1 file changed, 22 insertions(+), 7 deletions(-) (limited to 'fs/btrfs') diff --git a/fs/btrfs/tests/extent-io-tests.c b/fs/btrfs/tests/extent-io-tests.c index 705a8a7eb815..123d9a614357 100644 --- a/fs/btrfs/tests/extent-io-tests.c +++ b/fs/btrfs/tests/extent-io-tests.c @@ -438,6 +438,7 @@ static int test_find_first_clear_extent_bit(void) { struct extent_io_tree tree; u64 start, end; + int ret = -EINVAL; test_msg("running find_first_clear_extent_bit test"); extent_io_tree_init(NULL, &tree, IO_TREE_SELFTEST, NULL); @@ -452,9 +453,11 @@ static int test_find_first_clear_extent_bit(void) find_first_clear_extent_bit(&tree, SZ_512K, &start, &end, CHUNK_TRIMMED | CHUNK_ALLOCATED); - if (start != 0 || end != SZ_1M -1) + if (start != 0 || end != SZ_1M - 1) { test_err("error finding beginning range: start %llu end %llu", start, end); + goto out; + } /* Now add 32M-64M so that we have a hole between 4M-32M */ set_extent_bits(&tree, SZ_32M, SZ_64M - 1, @@ -466,9 +469,11 @@ static int test_find_first_clear_extent_bit(void) find_first_clear_extent_bit(&tree, 12 * SZ_1M, &start, &end, CHUNK_TRIMMED | CHUNK_ALLOCATED); - if (start != SZ_4M || end != SZ_32M - 1) + if (start != SZ_4M || end != SZ_32M - 1) { test_err("error finding trimmed range: start %llu end %llu", start, end); + goto out; + } /* * Search in the middle of allocated range, should get the next one @@ -477,9 +482,11 @@ static int test_find_first_clear_extent_bit(void) find_first_clear_extent_bit(&tree, SZ_2M, &start, &end, CHUNK_TRIMMED | CHUNK_ALLOCATED); - if (start != SZ_4M || end != SZ_32M -1) + if (start != SZ_4M || end != SZ_32M - 1) { test_err("error finding next unalloc range: start %llu end %llu", start, end); + goto out; + } /* * Set 64M-72M with CHUNK_ALLOC flag, then search for CHUNK_TRIMMED flag @@ -489,9 +496,11 @@ static int test_find_first_clear_extent_bit(void) find_first_clear_extent_bit(&tree, SZ_64M + SZ_1M, &start, &end, CHUNK_TRIMMED); - if (start != SZ_64M || end != SZ_64M + SZ_8M - 1) + if (start != SZ_64M || end != SZ_64M + SZ_8M - 1) { test_err("error finding exact range: start %llu end %llu", start, end); + goto out; + } find_first_clear_extent_bit(&tree, SZ_64M - SZ_8M, &start, &end, CHUNK_TRIMMED); @@ -500,23 +509,29 @@ static int test_find_first_clear_extent_bit(void) * Search in the middle of set range whose immediate neighbour doesn't * have the bits set so it must be returned */ - if (start != SZ_64M || end != SZ_64M + SZ_8M - 1) + if (start != SZ_64M || end != SZ_64M + SZ_8M - 1) { test_err("error finding next alloc range: start %llu end %llu", start, end); + goto out; + } /* * Search beyond any known range, shall return after last known range * and end should be -1 */ find_first_clear_extent_bit(&tree, -1, &start, &end, CHUNK_TRIMMED); - if (start != SZ_64M + SZ_8M || end != -1) + if (start != SZ_64M + SZ_8M || end != -1) { test_err( "error handling beyond end of range search: start %llu end %llu", start, end); + goto out; + } + ret = 0; +out: clear_extent_bits(&tree, 0, (u64)-1, CHUNK_TRIMMED | CHUNK_ALLOCATED); - return 0; + return ret; } int btrfs_test_extent_io(u32 sectorsize, u32 nodesize) -- cgit v1.2.3