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Merge pull request #910 from littlefs-project/fix-superblock-expansion-thresh

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Increase threshold for superblock expansion from ~50% -> ~88% full
This commit is contained in:
Christopher Haster
2023-12-21 00:07:55 -06:00
committed by GitHub
parent 9b82db72d8 b9b95ab4bc
commit 8a22bd6e67
1 changed files with 5 additions and 3 deletions
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lfs.c
+5 -3
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@@ -2151,9 +2151,11 @@ static int lfs_dir_splittingcompact(lfs_t *lfs, lfs_mdir_t *dir,
return size; return size;
} }
// do we have extra space? littlefs can't reclaim this space // littlefs cannot reclaim expanded superblocks, so expand cautiously
// by itself, so expand cautiously //
if ((lfs_size_t)size < lfs->block_count/2) { // if our filesystem is more than ~88% full, don't expand, this is
// somewhat arbitrary
if (lfs->block_count - size > lfs->block_count/8) {
LFS_DEBUG("Expanding superblock at rev %"PRIu32, dir->rev); LFS_DEBUG("Expanding superblock at rev %"PRIu32, dir->rev);
int err = lfs_dir_split(lfs, dir, attrs, attrcount, int err = lfs_dir_split(lfs, dir, attrs, attrcount,
source, begin, end); source, begin, end);