Add more kunit tests to cover the high level caller ext4_map_create_blocks(). We pass flags in a manner that covers the below function: 1. ext4_ext_handle_unwritten_extents() 1.1 - Split/Convert unwritten extent to written in endio convtext. 1.2 - Split/Convert unwritten extent to written in non endio context. 1.3 - Zeroout tests for the above 2 cases 2. convert_initialized_extent() - Convert written extent to unwritten during zero range Signed-off-by: Ojaswin Mujoo --- fs/ext4/ext4.h | 4 + fs/ext4/extents-test.c | 287 ++++++++++++++++++++++++++++++++++++++- fs/ext4/extents_status.c | 3 + fs/ext4/inode.c | 8 +- 4 files changed, 295 insertions(+), 7 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 174c51402864..5f744bd19dea 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -3786,6 +3786,10 @@ extern int ext4_convert_unwritten_io_end_vec(handle_t *handle, ext4_io_end_t *io_end); extern int ext4_map_blocks(handle_t *handle, struct inode *inode, struct ext4_map_blocks *map, int flags); +extern int ext4_map_query_blocks(handle_t *handle, struct inode *inode, + struct ext4_map_blocks *map, int flags); +extern int ext4_map_create_blocks(handle_t *handle, struct inode *inode, + struct ext4_map_blocks *map, int flags); extern int ext4_ext_calc_credits_for_single_extent(struct inode *inode, int num, struct ext4_ext_path *path); diff --git a/fs/ext4/extents-test.c b/fs/ext4/extents-test.c index 02565ad19abe..ebd7af64315a 100644 --- a/fs/ext4/extents-test.c +++ b/fs/ext4/extents-test.c @@ -77,10 +77,18 @@ struct kunit_ext_data_state { ext4_lblk_t len_blk; }; +enum kunit_test_types { + TEST_SPLIT_CONVERT, + TEST_CREATE_BLOCKS, +}; + struct kunit_ext_test_param { /* description of test */ char *desc; + /* determines which function will be tested */ + int type; + /* is extent unwrit at beginning of test */ bool is_unwrit_at_start; @@ -90,6 +98,9 @@ struct kunit_ext_test_param { /* map describing range to split */ struct ext4_map_blocks split_map; + /* disable zeroout */ + bool disable_zeroout; + /* no of extents expected after split */ int nr_exp_ext; @@ -131,6 +142,9 @@ static struct file_system_type ext_fs_type = { static void extents_kunit_exit(struct kunit *test) { + struct ext4_sb_info *sbi = k_ctx.k_ei->vfs_inode.i_sb->s_fs_info; + + kfree(sbi); kfree(k_ctx.k_ei); kfree(k_ctx.k_data); } @@ -162,6 +176,13 @@ static void ext4_es_remove_extent_stub(struct inode *inode, ext4_lblk_t lblk, return; } +void ext4_es_insert_extent_stub(struct inode *inode, ext4_lblk_t lblk, + ext4_lblk_t len, ext4_fsblk_t pblk, + unsigned int status, bool delalloc_reserve_used) +{ + return; +} + static void ext4_zeroout_es_stub(struct inode *inode, struct ext4_extent *ex) { return; @@ -220,6 +241,7 @@ static int extents_kunit_init(struct kunit *test) struct ext4_inode_info *ei; struct inode *inode; struct super_block *sb; + struct ext4_sb_info *sbi = NULL; struct kunit_ext_test_param *param = (struct kunit_ext_test_param *)(test->param_value); @@ -237,7 +259,20 @@ static int extents_kunit_init(struct kunit *test) sb->s_blocksize = 4096; sb->s_blocksize_bits = 12; - ei->i_disksize = (EX_DATA_LBLK + EX_DATA_LEN + 10) << sb->s_blocksize_bits; + sbi = kzalloc(sizeof(struct ext4_sb_info), GFP_KERNEL); + if (sbi == NULL) + return -ENOMEM; + + sbi->s_sb = sb; + sb->s_fs_info = sbi; + + if (!param || !param->disable_zeroout) + sbi->s_extent_max_zeroout_kb = 32; + + ei->i_disksize = (EX_DATA_LBLK + EX_DATA_LEN + 10) + << sb->s_blocksize_bits; + ei->i_flags = 0; + ext4_set_inode_flag(inode, EXT4_INODE_EXTENTS); inode->i_sb = sb; k_ctx.k_data = kzalloc(EX_DATA_LEN * 4096, GFP_KERNEL); @@ -277,6 +312,8 @@ static int extents_kunit_init(struct kunit *test) __ext4_ext_dirty_stub); kunit_activate_static_stub(test, ext4_es_remove_extent, ext4_es_remove_extent_stub); + kunit_activate_static_stub(test, ext4_es_insert_extent, + ext4_es_insert_extent_stub); kunit_activate_static_stub(test, ext4_zeroout_es, ext4_zeroout_es_stub); kunit_activate_static_stub(test, ext4_ext_zeroout, ext4_ext_zeroout_stub); kunit_activate_static_stub(test, ext4_issue_zeroout, @@ -301,6 +338,30 @@ static int check_buffer(char *buf, int c, int size) return 1; } +/* + * Simulate a map block call by first calling ext4_map_query_blocks() to + * correctly populate map flags and pblk and then call the + * ext4_map_create_blocks() to do actual split and conversion. This is easier + * than calling ext4_map_blocks() because that needs mocking a lot of unrelated + * functions. + */ +static void ext4_map_create_blocks_helper(struct kunit *test, + struct inode *inode, + struct ext4_map_blocks *map, + int flags) +{ + int retval = 0; + + retval = ext4_map_query_blocks(NULL, inode, map, flags); + if (retval < 0) { + KUNIT_FAIL(test, + "ext4_map_query_blocks() failed. Cannot proceed\n"); + return; + } + + ext4_map_create_blocks(NULL, inode, map, flags); +} + static void test_split_convert(struct kunit *test) { struct ext4_ext_path *path; @@ -330,8 +391,18 @@ static void test_split_convert(struct kunit *test) map.m_lblk = param->split_map.m_lblk; map.m_len = param->split_map.m_len; - ext4_split_convert_extents(NULL, inode, &map, path, - param->split_flags, NULL); + + switch (param->type) { + case TEST_SPLIT_CONVERT: + path = ext4_split_convert_extents(NULL, inode, &map, path, + param->split_flags, NULL); + break; + case TEST_CREATE_BLOCKS: + ext4_map_create_blocks_helper(test, inode, &map, param->split_flags); + break; + default: + KUNIT_FAIL(test, "param->type %d not support.", param->type); + } path = ext4_find_extent(inode, EX_DATA_LBLK, NULL, 0); ex = path->p_ext; @@ -383,6 +454,7 @@ static void test_split_convert(struct kunit *test) static const struct kunit_ext_test_param test_split_convert_params[] = { /* unwrit to writ splits */ { .desc = "split unwrit extent to 2 extents and convert 1st half writ", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 1, .split_flags = EXT4_GET_BLOCKS_CONVERT, .split_map = { .m_lblk = 10, .m_len = 1 }, @@ -391,6 +463,7 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 1 } }, .is_zeroout_test = 0 }, { .desc = "split unwrit extent to 2 extents and convert 2nd half writ", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 1, .split_flags = EXT4_GET_BLOCKS_CONVERT, .split_map = { .m_lblk = 11, .m_len = 2 }, @@ -399,6 +472,7 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 0 } }, .is_zeroout_test = 0 }, { .desc = "split unwrit extent to 3 extents and convert 2nd half to writ", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 1, .split_flags = EXT4_GET_BLOCKS_CONVERT, .split_map = { .m_lblk = 11, .m_len = 1 }, @@ -410,6 +484,7 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { /* writ to unwrit splits */ { .desc = "split writ extent to 2 extents and convert 1st half unwrit", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 0, .split_flags = EXT4_GET_BLOCKS_CONVERT_UNWRITTEN, .split_map = { .m_lblk = 10, .m_len = 1 }, @@ -418,6 +493,7 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 0 } }, .is_zeroout_test = 0 }, { .desc = "split writ extent to 2 extents and convert 2nd half unwrit", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 0, .split_flags = EXT4_GET_BLOCKS_CONVERT_UNWRITTEN, .split_map = { .m_lblk = 11, .m_len = 2 }, @@ -426,6 +502,7 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 1 } }, .is_zeroout_test = 0 }, { .desc = "split writ extent to 3 extents and convert 2nd half to unwrit", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 0, .split_flags = EXT4_GET_BLOCKS_CONVERT_UNWRITTEN, .split_map = { .m_lblk = 11, .m_len = 1 }, @@ -440,6 +517,7 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { */ /* unwrit to writ splits */ { .desc = "split unwrit extent to 2 extents and convert 1st half writ (zeroout)", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 1, .split_flags = EXT4_GET_BLOCKS_CONVERT, .split_map = { .m_lblk = 10, .m_len = 1 }, @@ -451,6 +529,7 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { .exp_data_state = { { .exp_char = 'X', .off_blk = 0, .len_blk = 1 }, { .exp_char = 0, .off_blk = 1, .len_blk = 2 } } }, { .desc = "split unwrit extent to 2 extents and convert 2nd half writ (zeroout)", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 1, .split_flags = EXT4_GET_BLOCKS_CONVERT, .split_map = { .m_lblk = 11, .m_len = 2 }, @@ -462,6 +541,7 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { .exp_data_state = { { .exp_char = 0, .off_blk = 0, .len_blk = 1 }, { .exp_char = 'X', .off_blk = 1, .len_blk = 2 } } }, { .desc = "split unwrit extent to 3 extents and convert 2nd half writ (zeroout)", + .type = TEST_SPLIT_CONVERT, .is_unwrit_at_start = 1, .split_flags = EXT4_GET_BLOCKS_CONVERT, .split_map = { .m_lblk = 11, .m_len = 1 }, @@ -476,6 +556,185 @@ static const struct kunit_ext_test_param test_split_convert_params[] = { }; +static const struct kunit_ext_test_param test_convert_initialized_params[] = { + /* writ to unwrit splits */ + { .desc = "split writ extent to 2 extents and convert 1st half unwrit", + .type = TEST_CREATE_BLOCKS, + .split_flags = EXT4_GET_BLOCKS_CONVERT_UNWRITTEN, + .is_unwrit_at_start = 0, + .split_map = { .m_lblk = 10, .m_len = 1 }, + .nr_exp_ext = 2, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 1 }, + { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 0 } }, + .is_zeroout_test = 0 }, + { .desc = "split writ extent to 2 extents and convert 2nd half unwrit", + .type = TEST_CREATE_BLOCKS, + .split_flags = EXT4_GET_BLOCKS_CONVERT_UNWRITTEN, + .is_unwrit_at_start = 0, + .split_map = { .m_lblk = 11, .m_len = 2 }, + .nr_exp_ext = 2, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 0 }, + { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 1 } }, + .is_zeroout_test = 0 }, + { .desc = "split writ extent to 3 extents and convert 2nd half to unwrit", + .type = TEST_CREATE_BLOCKS, + .split_flags = EXT4_GET_BLOCKS_CONVERT_UNWRITTEN, + .is_unwrit_at_start = 0, + .split_map = { .m_lblk = 11, .m_len = 1 }, + .nr_exp_ext = 3, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 0 }, + { .ex_lblk = 11, .ex_len = 1, .is_unwrit = 1 }, + { .ex_lblk = 12, .ex_len = 1, .is_unwrit = 0 } }, + .is_zeroout_test = 0 }, +}; + +static const struct kunit_ext_test_param test_handle_unwritten_params[] = { + /* unwrit to writ splits via endio path */ + { .desc = "split unwrit extent to 2 extents and convert 1st half writ (endio)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CONVERT, + .split_map = { .m_lblk = 10, .m_len = 1 }, + .nr_exp_ext = 2, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 0 }, + { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 1 } }, + .is_zeroout_test = 0 }, + { .desc = "split unwrit extent to 2 extents and convert 2nd half writ (endio)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CONVERT, + .split_map = { .m_lblk = 11, .m_len = 2 }, + .nr_exp_ext = 2, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 1 }, + { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 0 } }, + .is_zeroout_test = 0 }, + { .desc = "split unwrit extent to 3 extents and convert 2nd half to writ (endio)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CONVERT, + .split_map = { .m_lblk = 11, .m_len = 1 }, + .nr_exp_ext = 3, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 1 }, + { .ex_lblk = 11, .ex_len = 1, .is_unwrit = 0 }, + { .ex_lblk = 12, .ex_len = 1, .is_unwrit = 1 } }, + .is_zeroout_test = 0 }, + + /* unwrit to writ splits via non-endio path */ + { .desc = "split unwrit extent to 2 extents and convert 1st half writ (non endio)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CREATE, + .split_map = { .m_lblk = 10, .m_len = 1 }, + .nr_exp_ext = 2, + .disable_zeroout = true, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 0 }, + { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 1 } }, + .is_zeroout_test = 0 }, + { .desc = "split unwrit extent to 2 extents and convert 2nd half writ (non endio)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CREATE, + .split_map = { .m_lblk = 11, .m_len = 2 }, + .nr_exp_ext = 2, + .disable_zeroout = true, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 1 }, + { .ex_lblk = 11, .ex_len = 2, .is_unwrit = 0 } }, + .is_zeroout_test = 0 }, + { .desc = "split unwrit extent to 3 extents and convert 2nd half to writ (non endio)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CREATE, + .split_map = { .m_lblk = 11, .m_len = 1 }, + .nr_exp_ext = 3, + .disable_zeroout = true, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 1, .is_unwrit = 1 }, + { .ex_lblk = 11, .ex_len = 1, .is_unwrit = 0 }, + { .ex_lblk = 12, .ex_len = 1, .is_unwrit = 1 } }, + .is_zeroout_test = 0 }, + + /* + * ***** zeroout tests ***** + */ + /* unwrit to writ splits (endio)*/ + { .desc = "split unwrit extent to 2 extents and convert 1st half writ (endio, zeroout)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CONVERT, + .split_map = { .m_lblk = 10, .m_len = 1 }, + .nr_exp_ext = 1, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 3, .is_unwrit = 0 } }, + .is_zeroout_test = 1, + .nr_exp_data_segs = 2, + /* 1 block of data followed by 2 blocks of zeroes */ + .exp_data_state = { { .exp_char = 'X', .off_blk = 0, .len_blk = 1 }, + { .exp_char = 0, .off_blk = 1, .len_blk = 2 } } }, + { .desc = "split unwrit extent to 2 extents and convert 2nd half writ (endio, zeroout)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CONVERT, + .split_map = { .m_lblk = 11, .m_len = 2 }, + .nr_exp_ext = 1, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 3, .is_unwrit = 0 } }, + .is_zeroout_test = 1, + .nr_exp_data_segs = 2, + /* 1 block of zeroes followed by 2 blocks of data */ + .exp_data_state = { { .exp_char = 0, .off_blk = 0, .len_blk = 1 }, + { .exp_char = 'X', .off_blk = 1, .len_blk = 2 } } }, + { .desc = "split unwrit extent to 3 extents and convert 2nd half writ (endio, zeroout)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CONVERT, + .split_map = { .m_lblk = 11, .m_len = 1 }, + .nr_exp_ext = 1, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 3, .is_unwrit = 0 } }, + .is_zeroout_test = 1, + .nr_exp_data_segs = 3, + /* [zeroes] [data] [zeroes] */ + .exp_data_state = { { .exp_char = 0, .off_blk = 0, .len_blk = 1 }, + { .exp_char = 'X', .off_blk = 1, .len_blk = 1 }, + { .exp_char = 0, .off_blk = 2, .len_blk = 1 } } }, + + /* unwrit to writ splits (non-endio)*/ + { .desc = "split unwrit extent to 2 extents and convert 1st half writ (non-endio, zeroout)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CREATE, + .split_map = { .m_lblk = 10, .m_len = 1 }, + .nr_exp_ext = 1, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 3, .is_unwrit = 0 } }, + .is_zeroout_test = 1, + .nr_exp_data_segs = 2, + /* 1 block of data followed by 2 blocks of zeroes */ + .exp_data_state = { { .exp_char = 'X', .off_blk = 0, .len_blk = 1 }, + { .exp_char = 0, .off_blk = 1, .len_blk = 2 } } }, + { .desc = "split unwrit extent to 2 extents and convert 2nd half writ (non-endio, zeroout)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CREATE, + .split_map = { .m_lblk = 11, .m_len = 2 }, + .nr_exp_ext = 1, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 3, .is_unwrit = 0 } }, + .is_zeroout_test = 1, + .nr_exp_data_segs = 2, + /* 1 block of zeroes followed by 2 blocks of data */ + .exp_data_state = { { .exp_char = 0, .off_blk = 0, .len_blk = 1 }, + { .exp_char = 'X', .off_blk = 1, .len_blk = 2 } } }, + { .desc = "split unwrit extent to 3 extents and convert 2nd half writ (non-endio, zeroout)", + .type = TEST_CREATE_BLOCKS, + .is_unwrit_at_start = 1, + .split_flags = EXT4_GET_BLOCKS_CREATE, + .split_map = { .m_lblk = 11, .m_len = 1 }, + .nr_exp_ext = 1, + .exp_ext_state = { { .ex_lblk = 10, .ex_len = 3, .is_unwrit = 0 } }, + .is_zeroout_test = 1, + .nr_exp_data_segs = 3, + /* [zeroes] [data] [zeroes] */ + .exp_data_state = { { .exp_char = 0, .off_blk = 0, .len_blk = 1 }, + { .exp_char = 'X', .off_blk = 1, .len_blk = 1 }, + { .exp_char = 0, .off_blk = 2, .len_blk = 1 } } }, + +}; + static void ext_get_desc(struct kunit *test, const void *p, char *desc) { @@ -493,6 +752,24 @@ static int test_split_convert_param_init(struct kunit *test) return 0; } +static int test_convert_initialized_param_init(struct kunit *test) +{ + size_t arr_size = ARRAY_SIZE(test_convert_initialized_params); + + kunit_register_params_array(test, test_convert_initialized_params, + arr_size, ext_get_desc); + return 0; +} + +static int test_handle_unwritten_init(struct kunit *test) +{ + size_t arr_size = ARRAY_SIZE(test_handle_unwritten_params); + + kunit_register_params_array(test, test_handle_unwritten_params, + arr_size, ext_get_desc); + return 0; +} + /* * Note that we use KUNIT_CASE_PARAM_WITH_INIT() instead of the more compact * KUNIT_ARRAY_PARAM() because the later currently has a limitation causing the @@ -503,6 +780,10 @@ static int test_split_convert_param_init(struct kunit *test) static struct kunit_case extents_test_cases[] = { KUNIT_CASE_PARAM_WITH_INIT(test_split_convert, kunit_array_gen_params, test_split_convert_param_init, NULL), + KUNIT_CASE_PARAM_WITH_INIT(test_split_convert, kunit_array_gen_params, + test_convert_initialized_param_init, NULL), + KUNIT_CASE_PARAM_WITH_INIT(test_split_convert, kunit_array_gen_params, + test_handle_unwritten_init, NULL), {} }; diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 6c1faf7c9f2a..095ccb7ba4ba 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -916,6 +916,9 @@ void ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk, struct pending_reservation *pr = NULL; bool revise_pending = false; + KUNIT_STATIC_STUB_REDIRECT(ext4_es_insert_extent, inode, lblk, len, + pblk, status, delalloc_reserve_used); + if (EXT4_SB(inode->i_sb)->s_mount_state & EXT4_FC_REPLAY) return; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index c60813260f9a..8a6ad16e7417 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -542,8 +542,8 @@ static int ext4_map_query_blocks_next_in_leaf(handle_t *handle, return map->m_len; } -static int ext4_map_query_blocks(handle_t *handle, struct inode *inode, - struct ext4_map_blocks *map, int flags) +int ext4_map_query_blocks(handle_t *handle, struct inode *inode, + struct ext4_map_blocks *map, int flags) { unsigned int status; int retval; @@ -589,8 +589,8 @@ static int ext4_map_query_blocks(handle_t *handle, struct inode *inode, return retval; } -static int ext4_map_create_blocks(handle_t *handle, struct inode *inode, - struct ext4_map_blocks *map, int flags) +int ext4_map_create_blocks(handle_t *handle, struct inode *inode, + struct ext4_map_blocks *map, int flags) { unsigned int status; int err, retval = 0; -- 2.52.0