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Merge branch 'fst-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9

Browse Source 
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Chris Mason
2016-10-12 13:16:00 -07:00
parent 19c4d2f994 0e6757859e
commit d9ed71e545
8 changed files with 272 additions and 157 deletions
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87
fs/btrfs/tests/extent-io-tests.c
View File

@@ -273,20 +273,37 @@ out:
return ret;
}
/**
* test_bit_in_byte - Determine whether a bit is set in a byte
* @nr: bit number to test
* @addr: Address to start counting from
*/
static inline int test_bit_in_byte(int nr, const u8 *addr)
static int check_eb_bitmap(unsigned long *bitmap, struct extent_buffer *eb,
unsigned long len)
{
return 1UL & (addr[nr / BITS_PER_BYTE] >> (nr & (BITS_PER_BYTE - 1)));
unsigned long i;
for (i = 0; i < len * BITS_PER_BYTE; i++) {
int bit, bit1;
bit = !!test_bit(i, bitmap);
bit1 = !!extent_buffer_test_bit(eb, 0, i);
if (bit1 != bit) {
test_msg("Bits do not match\n");
return -EINVAL;
}
bit1 = !!extent_buffer_test_bit(eb, i / BITS_PER_BYTE,
i % BITS_PER_BYTE);
if (bit1 != bit) {
test_msg("Offset bits do not match\n");
return -EINVAL;
}
}
return 0;
}
static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb,
unsigned long len)
{
unsigned long i, x;
unsigned long i, j;
u32 x;
int ret;
memset(bitmap, 0, len);
memset_extent_buffer(eb, 0, 0, len);
@@ -297,16 +314,18 @@ static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb,
bitmap_set(bitmap, 0, len * BITS_PER_BYTE);
extent_buffer_bitmap_set(eb, 0, 0, len * BITS_PER_BYTE);
if (memcmp_extent_buffer(eb, bitmap, 0, len) != 0) {
ret = check_eb_bitmap(bitmap, eb, len);
if (ret) {
test_msg("Setting all bits failed\n");
return -EINVAL;
return ret;
}
bitmap_clear(bitmap, 0, len * BITS_PER_BYTE);
extent_buffer_bitmap_clear(eb, 0, 0, len * BITS_PER_BYTE);
if (memcmp_extent_buffer(eb, bitmap, 0, len) != 0) {
ret = check_eb_bitmap(bitmap, eb, len);
if (ret) {
test_msg("Clearing all bits failed\n");
return -EINVAL;
return ret;
}
/* Straddling pages test */
@@ -316,9 +335,10 @@ static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb,
sizeof(long) * BITS_PER_BYTE);
extent_buffer_bitmap_set(eb, PAGE_SIZE - sizeof(long) / 2, 0,
sizeof(long) * BITS_PER_BYTE);
if (memcmp_extent_buffer(eb, bitmap, 0, len) != 0) {
ret = check_eb_bitmap(bitmap, eb, len);
if (ret) {
test_msg("Setting straddling pages failed\n");
return -EINVAL;
return ret;
}
bitmap_set(bitmap, 0, len * BITS_PER_BYTE);
@@ -328,9 +348,10 @@ static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb,
extent_buffer_bitmap_set(eb, 0, 0, len * BITS_PER_BYTE);
extent_buffer_bitmap_clear(eb, PAGE_SIZE - sizeof(long) / 2, 0,
sizeof(long) * BITS_PER_BYTE);
if (memcmp_extent_buffer(eb, bitmap, 0, len) != 0) {
ret = check_eb_bitmap(bitmap, eb, len);
if (ret) {
test_msg("Clearing straddling pages failed\n");
return -EINVAL;
return ret;
}
}
@@ -339,28 +360,22 @@ static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb,
* something repetitive that could miss some hypothetical off-by-n bug.
*/
x = 0;
for (i = 0; i < len / sizeof(long); i++) {
x = (0x19660dULL * (u64)x + 0x3c6ef35fULL) & 0xffffffffUL;
bitmap[i] = x;
bitmap_clear(bitmap, 0, len * BITS_PER_BYTE);
extent_buffer_bitmap_clear(eb, 0, 0, len * BITS_PER_BYTE);
for (i = 0; i < len * BITS_PER_BYTE / 32; i++) {
x = (0x19660dULL * (u64)x + 0x3c6ef35fULL) & 0xffffffffU;
for (j = 0; j < 32; j++) {
if (x & (1U << j)) {
bitmap_set(bitmap, i * 32 + j, 1);
extent_buffer_bitmap_set(eb, 0, i * 32 + j, 1);
}
}
}
write_extent_buffer(eb, bitmap, 0, len);
for (i = 0; i < len * BITS_PER_BYTE; i++) {
int bit, bit1;
bit = !!test_bit_in_byte(i, (u8 *)bitmap);
bit1 = !!extent_buffer_test_bit(eb, 0, i);
if (bit1 != bit) {
test_msg("Testing bit pattern failed\n");
return -EINVAL;
}
bit1 = !!extent_buffer_test_bit(eb, i / BITS_PER_BYTE,
i % BITS_PER_BYTE);
if (bit1 != bit) {
test_msg("Testing bit pattern with offset failed\n");
return -EINVAL;
}
ret = check_eb_bitmap(bitmap, eb, len);
if (ret) {
test_msg("Random bit pattern failed\n");
return ret;
}
return 0;

189
fs/btrfs/tests/free-space-tree-tests.c
View File

@@ -24,20 +24,15 @@
#include "../transaction.h"
struct free_space_extent {
u64 start, length;
u64 start;
u64 length;
};
/*
* The test cases align their operations to this in order to hit some of the
* edge cases in the bitmap code.
*/
#define BITMAP_RANGE (BTRFS_FREE_SPACE_BITMAP_BITS * PAGE_SIZE)
static int __check_free_space_extents(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path,
struct free_space_extent *extents,
const struct free_space_extent * const extents,
unsigned int num_extents)
{
struct btrfs_free_space_info *info;
@@ -126,7 +121,7 @@ static int check_free_space_extents(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path,
struct free_space_extent *extents,
const struct free_space_extent * const extents,
unsigned int num_extents)
{
struct btrfs_free_space_info *info;
@@ -168,9 +163,10 @@ static int check_free_space_extents(struct btrfs_trans_handle *trans,
static int test_empty_block_group(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {
const struct free_space_extent extents[] = {
{cache->key.objectid, cache->key.offset},
};
@@ -181,9 +177,10 @@ static int test_empty_block_group(struct btrfs_trans_handle *trans,
static int test_remove_all(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {};
const struct free_space_extent extents[] = {};
int ret;
ret = __remove_from_free_space_tree(trans, fs_info, cache, path,
@@ -201,16 +198,17 @@ static int test_remove_all(struct btrfs_trans_handle *trans,
static int test_remove_beginning(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {
{cache->key.objectid + BITMAP_RANGE,
cache->key.offset - BITMAP_RANGE},
const struct free_space_extent extents[] = {
{cache->key.objectid + alignment,
cache->key.offset - alignment},
};
int ret;
ret = __remove_from_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid, BITMAP_RANGE);
cache->key.objectid, alignment);
if (ret) {
test_msg("Could not remove free space\n");
return ret;
@@ -224,17 +222,18 @@ static int test_remove_beginning(struct btrfs_trans_handle *trans,
static int test_remove_end(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {
{cache->key.objectid, cache->key.offset - BITMAP_RANGE},
const struct free_space_extent extents[] = {
{cache->key.objectid, cache->key.offset - alignment},
};
int ret;
ret = __remove_from_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid +
cache->key.offset - BITMAP_RANGE,
BITMAP_RANGE);
cache->key.offset - alignment,
alignment);
if (ret) {
test_msg("Could not remove free space\n");
return ret;
@@ -247,18 +246,19 @@ static int test_remove_end(struct btrfs_trans_handle *trans,
static int test_remove_middle(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {
{cache->key.objectid, BITMAP_RANGE},
{cache->key.objectid + 2 * BITMAP_RANGE,
cache->key.offset - 2 * BITMAP_RANGE},
const struct free_space_extent extents[] = {
{cache->key.objectid, alignment},
{cache->key.objectid + 2 * alignment,
cache->key.offset - 2 * alignment},
};
int ret;
ret = __remove_from_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid + BITMAP_RANGE,
BITMAP_RANGE);
cache->key.objectid + alignment,
alignment);
if (ret) {
test_msg("Could not remove free space\n");
return ret;
@@ -271,10 +271,11 @@ static int test_remove_middle(struct btrfs_trans_handle *trans,
static int test_merge_left(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {
{cache->key.objectid, 2 * BITMAP_RANGE},
const struct free_space_extent extents[] = {
{cache->key.objectid, 2 * alignment},
};
int ret;
@@ -287,15 +288,15 @@ static int test_merge_left(struct btrfs_trans_handle *trans,
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid, BITMAP_RANGE);
cache->key.objectid, alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid + BITMAP_RANGE,
BITMAP_RANGE);
cache->key.objectid + alignment,
alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
@@ -308,10 +309,11 @@ static int test_merge_left(struct btrfs_trans_handle *trans,
static int test_merge_right(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {
{cache->key.objectid + BITMAP_RANGE, 2 * BITMAP_RANGE},
const struct free_space_extent extents[] = {
{cache->key.objectid + alignment, 2 * alignment},
};
int ret;
@@ -324,16 +326,16 @@ static int test_merge_right(struct btrfs_trans_handle *trans,
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid + 2 * BITMAP_RANGE,
BITMAP_RANGE);
cache->key.objectid + 2 * alignment,
alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid + BITMAP_RANGE,
BITMAP_RANGE);
cache->key.objectid + alignment,
alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
@@ -346,10 +348,11 @@ static int test_merge_right(struct btrfs_trans_handle *trans,
static int test_merge_both(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {
{cache->key.objectid, 3 * BITMAP_RANGE},
const struct free_space_extent extents[] = {
{cache->key.objectid, 3 * alignment},
};
int ret;
@@ -362,23 +365,23 @@ static int test_merge_both(struct btrfs_trans_handle *trans,
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid, BITMAP_RANGE);
cache->key.objectid, alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid + 2 * BITMAP_RANGE,
BITMAP_RANGE);
cache->key.objectid + 2 * alignment,
alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid + BITMAP_RANGE,
BITMAP_RANGE);
cache->key.objectid + alignment,
alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
@@ -391,12 +394,13 @@ static int test_merge_both(struct btrfs_trans_handle *trans,
static int test_merge_none(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
struct btrfs_block_group_cache *cache,
struct btrfs_path *path)
struct btrfs_path *path,
u32 alignment)
{
struct free_space_extent extents[] = {
{cache->key.objectid, BITMAP_RANGE},
{cache->key.objectid + 2 * BITMAP_RANGE, BITMAP_RANGE},
{cache->key.objectid + 4 * BITMAP_RANGE, BITMAP_RANGE},
const struct free_space_extent extents[] = {
{cache->key.objectid, alignment},
{cache->key.objectid + 2 * alignment, alignment},
{cache->key.objectid + 4 * alignment, alignment},
};
int ret;
@@ -409,23 +413,23 @@ static int test_merge_none(struct btrfs_trans_handle *trans,
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid, BITMAP_RANGE);
cache->key.objectid, alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid + 4 * BITMAP_RANGE,
BITMAP_RANGE);
cache->key.objectid + 4 * alignment,
alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
}
ret = __add_to_free_space_tree(trans, fs_info, cache, path,
cache->key.objectid + 2 * BITMAP_RANGE,
BITMAP_RANGE);
cache->key.objectid + 2 * alignment,
alignment);
if (ret) {
test_msg("Could not add free space\n");
return ret;
@@ -438,10 +442,11 @@ static int test_merge_none(struct btrfs_trans_handle *trans,
typedef int (*test_func_t)(struct btrfs_trans_handle *,
struct btrfs_fs_info *,
struct btrfs_block_group_cache *,
struct btrfs_path *);
struct btrfs_path *,
u32 alignment);
static int run_test(test_func_t test_func, int bitmaps,
u32 sectorsize, u32 nodesize)
static int run_test(test_func_t test_func, int bitmaps, u32 sectorsize,
u32 nodesize, u32 alignment)
{
struct btrfs_fs_info *fs_info;
struct btrfs_root *root = NULL;
@@ -480,7 +485,7 @@ static int run_test(test_func_t test_func, int bitmaps,
btrfs_set_header_nritems(root->node, 0);
root->alloc_bytenr += 2 * nodesize;
cache = btrfs_alloc_dummy_block_group(8 * BITMAP_RANGE, sectorsize);
cache = btrfs_alloc_dummy_block_group(8 * alignment, sectorsize);
if (!cache) {
test_msg("Couldn't allocate dummy block group cache\n");
ret = -ENOMEM;
@@ -514,7 +519,7 @@ static int run_test(test_func_t test_func, int bitmaps,
}
}
ret = test_func(&trans, root->fs_info, cache, path);
ret = test_func(&trans, root->fs_info, cache, path, alignment);
if (ret)
goto out;
@@ -539,15 +544,27 @@ out:
return ret;
}
static int run_test_both_formats(test_func_t test_func,
u32 sectorsize, u32 nodesize)
static int run_test_both_formats(test_func_t test_func, u32 sectorsize,
u32 nodesize, u32 alignment)
{
int test_ret = 0;
int ret;
ret = run_test(test_func, 0, sectorsize, nodesize);
if (ret)
return ret;
return run_test(test_func, 1, sectorsize, nodesize);
ret = run_test(test_func, 0, sectorsize, nodesize, alignment);
if (ret) {
test_msg("%pf failed with extents, sectorsize=%u, nodesize=%u, alignment=%u\n",
test_func, sectorsize, nodesize, alignment);
test_ret = ret;
}
ret = run_test(test_func, 1, sectorsize, nodesize, alignment);
if (ret) {
test_msg("%pf failed with bitmaps, sectorsize=%u, nodesize=%u, alignment=%u\n",
test_func, sectorsize, nodesize, alignment);
test_ret = ret;
}
return test_ret;
}
int btrfs_test_free_space_tree(u32 sectorsize, u32 nodesize)
@@ -563,18 +580,30 @@ int btrfs_test_free_space_tree(u32 sectorsize, u32 nodesize)
test_merge_both,
test_merge_none,
};
u32 bitmap_alignment;
int test_ret = 0;
int i;
/*
* Align some operations to a page to flush out bugs in the extent
* buffer bitmap handling of highmem.
*/
bitmap_alignment = BTRFS_FREE_SPACE_BITMAP_BITS * PAGE_SIZE;
test_msg("Running free space tree tests\n");
for (i = 0; i < ARRAY_SIZE(tests); i++) {
int ret = run_test_both_formats(tests[i], sectorsize,
nodesize);
if (ret) {
test_msg("%pf : sectorsize %u failed\n",
tests[i], sectorsize);
return ret;
}
int ret;
ret = run_test_both_formats(tests[i], sectorsize, nodesize,
sectorsize);
if (ret)
test_ret = ret;
ret = run_test_both_formats(tests[i], sectorsize, nodesize,
bitmap_alignment);
if (ret)
test_ret = ret;
}
return 0;
return test_ret;
}