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Merge pull request #490 from littlefs-project/fix-alloc-eviction

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Fix allocation-eviction issue when erase state is multiple of block_cycles+1
This commit is contained in:
Christopher Haster
2020-12-04 00:49:09 -06:00
committed by GitHub
parent 2bb523421e b8dcf10974
commit 5783eea0de
1 changed files with 6 additions and 2 deletions
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8
lfs.c
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@@ -1460,8 +1460,12 @@ static int lfs_dir_alloc(lfs_t *lfs, lfs_mdir_t *dir) {
return err; return err;
} }
// make sure we don't immediately evict // to make sure we don't immediately evict, align the new revision count
dir->rev += dir->rev & 1; // to our block_cycles modulus, see lfs_dir_compact for why our modulus
// is tweaked this way
if (lfs->cfg->block_cycles > 0) {
dir->rev = lfs_alignup(dir->rev, ((lfs->cfg->block_cycles+1)|1));
}
// set defaults // set defaults
dir->off = sizeof(dir->rev); dir->off = sizeof(dir->rev);