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Merge pull request #5761 from geky/littlefs-fix-lookahead-rewind 

littlefs: Fix issue with immediate exhaustion and small unaligned storage
pull/5865/merge
Cruz Monrreal 2018-01-18 13:01:25 -06:00 committed by GitHub
parent 6b034fbc08 5e7c0976fa
commit b8abbab38b
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 10 additions and 12 deletions
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3
.travis.yml
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@ -145,8 +145,7 @@ matrix:
- CFLAGS="-Wno-format -DLFS_READ_SIZE=64 -DLFS_PROG_SIZE=64" make -C$LITTLEFS/littlefs test QUIET=1
- CFLAGS="-Wno-format -DLFS_READ_SIZE=1 -DLFS_PROG_SIZE=1" make -C$LITTLEFS/littlefs test QUIET=1
- CFLAGS="-Wno-format -DLFS_READ_SIZE=512 -DLFS_PROG_SIZE=512" make -C$LITTLEFS/littlefs test QUIET=1
- CFLAGS="-Wno-format -DLFS_BLOCK_COUNT=1023" make -C$LITTLEFS/littlefs test QUIET=1
- CFLAGS="-Wno-format -DLFS_LOOKAHEAD=2048" make -C$LITTLEFS/littlefs test QUIET=1
- CFLAGS="-Wno-format -DLFS_BLOCK_COUNT=1023 -DLFS_LOOKAHEAD=2048" make -C$LITTLEFS/littlefs test QUIET=1
# Self-hosting littlefs fuzz test with littlefs-fuse
- make -Clittlefs_fuse
- littlefs_fuse/lfs --format /dev/loop0

3
features/filesystem/littlefs/littlefs/.travis.yml
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@ -14,8 +14,7 @@ script:
# run tests with a few different configurations
- CFLAGS="-DLFS_READ_SIZE=1 -DLFS_PROG_SIZE=1" make test QUIET=1
- CFLAGS="-DLFS_READ_SIZE=512 -DLFS_PROG_SIZE=512" make test QUIET=1
- CFLAGS="-DLFS_BLOCK_COUNT=1023" make test QUIET=1
- CFLAGS="-DLFS_LOOKAHEAD=2048" make test QUIET=1
- CFLAGS="-DLFS_BLOCK_COUNT=1023 -DLFS_LOOKAHEAD=2048" make test QUIET=1
# self-host with littlefs-fuse for fuzz test
- make -C littlefs-fuse

6
features/filesystem/littlefs/littlefs/lfs.c
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@ -2039,9 +2039,9 @@ int lfs_mount(lfs_t *lfs, const struct lfs_config *cfg) {
return err;
}
// setup free lookahead
lfs->free.begin = -lfs->cfg->lookahead;
lfs->free.off = lfs->cfg->lookahead;
// setup free lookahead, rewind so first allocation triggers a scan
lfs->free.begin = -lfs_min(lfs->cfg->lookahead, lfs->cfg->block_count);
lfs->free.off = -lfs->free.begin;
lfs->free.end = lfs->free.begin + lfs->free.off + lfs->cfg->block_count;
// load superblock