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| author | David Anderson <dvander@google.com> | 2020-02-11 02:54:54 +0000 |
|---|---|---|
| committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2020-02-11 02:54:54 +0000 |
| commit | 1c68004c18d44c71cc7ba300a2fdbc798cb32b94 (patch) | |
| tree | 8a2a7a45e572f560e5faac2351364d1149349e26 | |
| parent | e754e6de22cc2ac7ee07a00023aa1990600d8384 (diff) | |
| parent | 346bee6f8b97aefe7714688f738606c116099fbc (diff) | |
| download | e2fsprogs-1c68004c18d44c71cc7ba300a2fdbc798cb32b94.tar.gz | |
Merge "e2fsdroid: Properly free the dedup block map."
| -rw-r--r-- | contrib/android/basefs_allocator.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/contrib/android/basefs_allocator.c b/contrib/android/basefs_allocator.c index 8a2b27e6..32305319 100644 --- a/contrib/android/basefs_allocator.c +++ b/contrib/android/basefs_allocator.c @@ -39,6 +39,28 @@ static void fs_free_blocks_range(ext2_filsys fs, } } +/* + * Free any blocks in the bitmap that were reserved but never used. This is + * needed to free dedup_block_map and ensure the free block bitmap is + * internally consistent. + */ +static void fs_free_blocks_bitmap(ext2_filsys fs, ext2fs_block_bitmap bitmap) +{ + blk64_t block = 0; + blk64_t start = fs->super->s_first_data_block; + blk64_t end = ext2fs_blocks_count(fs->super) - 1; + errcode_t retval; + + for (;;) { + retval = ext2fs_find_first_set_block_bitmap2(bitmap, start, end, + &block); + if (retval) + break; + ext2fs_unmark_block_bitmap2(fs->block_map, block); + start = block + 1; + } +} + static void basefs_allocator_free(ext2_filsys fs, struct base_fs_allocator *allocator) { @@ -53,6 +75,7 @@ static void basefs_allocator_free(ext2_filsys fs, } ext2fs_hashmap_free(entries); } + fs_free_blocks_bitmap(fs, allocator->dedup_block_map); ext2fs_free_block_bitmap(allocator->exclusive_block_map); ext2fs_free_block_bitmap(allocator->dedup_block_map); free(allocator); |