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btrfs: unexport add_extent_mapping()

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There's no need to export add_extent_mapping(), as it's only used inside
extent_map.c and in the self tests. For the tests we can use instead
btrfs_add_extent_mapping(), which will accomplish exactly the same as we
don't expect collisions in any of them. So unexport it and make the tests
use btrfs_add_extent_mapping() instead of add_extent_mapping().

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2023-12-04 16:20:27 +00:00 committed by David Sterba
parent c9201b4fec
commit db9d94464a
3 changed files with 25 additions and 26 deletions
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4
fs/btrfs/extent_map.c
View file

@ -366,8 +366,8 @@ static inline void setup_extent_mapping(struct extent_map_tree *tree,
* into the tree directly, with an additional reference taken, or a
* reference dropped if the merge attempt was successful.
*/
int add_extent_mapping(struct extent_map_tree *tree,
struct extent_map *em, int modified)
static int add_extent_mapping(struct extent_map_tree *tree,
struct extent_map *em, int modified)
{
int ret = 0;

2
fs/btrfs/extent_map.h
View file

@ -74,8 +74,6 @@ static inline u64 extent_map_end(struct extent_map *em)
void extent_map_tree_init(struct extent_map_tree *tree);
struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree,
u64 start, u64 len);
int add_extent_mapping(struct extent_map_tree *tree,
struct extent_map *em, int modified);
void remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em);
int split_extent_map(struct btrfs_inode *inode, u64 start, u64 len, u64 pre,
u64 new_logical);

45
fs/btrfs/tests/extent-map-tests.c
View file

@ -73,7 +73,7 @@ static int test_case_1(struct btrfs_fs_info *fs_info,
em->block_start = 0;
em->block_len = SZ_16K;
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("cannot add extent range [0, 16K)");
@ -94,7 +94,7 @@ static int test_case_1(struct btrfs_fs_info *fs_info,
em->block_start = SZ_32K; /* avoid merging */
em->block_len = SZ_4K;
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("cannot add extent range [16K, 20K)");
@ -166,7 +166,7 @@ static int test_case_2(struct btrfs_fs_info *fs_info,
em->block_start = EXTENT_MAP_INLINE;
em->block_len = (u64)-1;
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("cannot add extent range [0, 1K)");
@ -187,7 +187,7 @@ static int test_case_2(struct btrfs_fs_info *fs_info,
em->block_start = SZ_4K;
em->block_len = SZ_4K;
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("cannot add extent range [4K, 8K)");
@ -253,7 +253,7 @@ static int __test_case_3(struct btrfs_fs_info *fs_info,
em->block_start = SZ_4K;
em->block_len = SZ_4K;
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("cannot add extent range [4K, 8K)");
@ -357,7 +357,7 @@ static int __test_case_4(struct btrfs_fs_info *fs_info,
em->block_start = 0;
em->block_len = SZ_8K;
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("cannot add extent range [0, 8K)");
@ -378,7 +378,7 @@ static int __test_case_4(struct btrfs_fs_info *fs_info,
em->block_start = SZ_16K; /* avoid merging */
em->block_len = 24 * SZ_1K;
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("cannot add extent range [8K, 32K)");
@ -463,7 +463,8 @@ static int test_case_4(struct btrfs_fs_info *fs_info,
return ret;
}
static int add_compressed_extent(struct extent_map_tree *em_tree,
static int add_compressed_extent(struct btrfs_fs_info *fs_info,
struct extent_map_tree *em_tree,
u64 start, u64 len, u64 block_start)
{
struct extent_map *em;
@ -481,7 +482,7 @@ static int add_compressed_extent(struct extent_map_tree *em_tree,
em->block_len = SZ_4K;
set_bit(EXTENT_FLAG_COMPRESSED, &em->flags);
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
free_extent_map(em);
if (ret < 0) {
@ -587,7 +588,7 @@ static int validate_range(struct extent_map_tree *em_tree, int index)
* They'll have the EXTENT_FLAG_COMPRESSED flag set to keep the em tree from
* merging the em's.
*/
static int test_case_5(void)
static int test_case_5(struct btrfs_fs_info *fs_info)
{
struct extent_map_tree *em_tree;
struct inode *inode;
@ -605,35 +606,35 @@ static int test_case_5(void)
em_tree = &BTRFS_I(inode)->extent_tree;
/* [0, 12k) */
ret = add_compressed_extent(em_tree, 0, SZ_4K * 3, 0);
ret = add_compressed_extent(fs_info, em_tree, 0, SZ_4K * 3, 0);
if (ret) {
test_err("cannot add extent range [0, 12K)");
goto out;
}
/* [12k, 24k) */
ret = add_compressed_extent(em_tree, SZ_4K * 3, SZ_4K * 3, SZ_4K);
ret = add_compressed_extent(fs_info, em_tree, SZ_4K * 3, SZ_4K * 3, SZ_4K);
if (ret) {
test_err("cannot add extent range [12k, 24k)");
goto out;
}
/* [24k, 36k) */
ret = add_compressed_extent(em_tree, SZ_4K * 6, SZ_4K * 3, SZ_8K);
ret = add_compressed_extent(fs_info, em_tree, SZ_4K * 6, SZ_4K * 3, SZ_8K);
if (ret) {
test_err("cannot add extent range [12k, 24k)");
goto out;
}
/* [36k, 40k) */
ret = add_compressed_extent(em_tree, SZ_32K + SZ_4K, SZ_4K, SZ_4K * 3);
ret = add_compressed_extent(fs_info, em_tree, SZ_32K + SZ_4K, SZ_4K, SZ_4K * 3);
if (ret) {
test_err("cannot add extent range [12k, 24k)");
goto out;
}
/* [40k, 64k) */
ret = add_compressed_extent(em_tree, SZ_4K * 10, SZ_4K * 6, SZ_16K);
ret = add_compressed_extent(fs_info, em_tree, SZ_4K * 10, SZ_4K * 6, SZ_16K);
if (ret) {
test_err("cannot add extent range [12k, 24k)");
goto out;
@ -685,11 +686,11 @@ static int test_case_6(struct btrfs_fs_info *fs_info, struct extent_map_tree *em
struct extent_map *em = NULL;
int ret;
ret = add_compressed_extent(em_tree, 0, SZ_4K, 0);
ret = add_compressed_extent(fs_info, em_tree, 0, SZ_4K, 0);
if (ret)
goto out;
ret = add_compressed_extent(em_tree, SZ_4K, SZ_4K, 0);
ret = add_compressed_extent(fs_info, em_tree, SZ_4K, SZ_4K, 0);
if (ret)
goto out;
@ -733,7 +734,7 @@ static int test_case_6(struct btrfs_fs_info *fs_info, struct extent_map_tree *em
* true would mess up the start/end calculations and subsequent splits would be
* incorrect.
*/
static int test_case_7(void)
static int test_case_7(struct btrfs_fs_info *fs_info)
{
struct extent_map_tree *em_tree;
struct extent_map *em;
@ -764,7 +765,7 @@ static int test_case_7(void)
em->block_len = SZ_4K;
set_bit(EXTENT_FLAG_PINNED, &em->flags);
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("couldn't add extent map");
@ -785,7 +786,7 @@ static int test_case_7(void)
em->block_start = SZ_32K;
em->block_len = SZ_16K;
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em, 0);
ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, em->start, em->len);
write_unlock(&em_tree->lock);
if (ret < 0) {
test_err("couldn't add extent map");
@ -1022,13 +1023,13 @@ int btrfs_test_extent_map(void)
ret = test_case_4(fs_info, em_tree);
if (ret)
goto out;
ret = test_case_5();
ret = test_case_5(fs_info);
if (ret)
goto out;
ret = test_case_6(fs_info, em_tree);
if (ret)
goto out;
ret = test_case_7();
ret = test_case_7(fs_info);
if (ret)
goto out;