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Renamed cache_size -> buffer_size

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This makes littlefs's usage of the term "cache" an entirely internal
concept and hopefully avoids some confusion about the usefulness of
throwing RAM > block_size at these buffers.

The term cache isn't entirely inaccurate, these buffers do act as
single-line caches, however more often the term cache is used to
describe multi-line caches. Maybe this will be added in littlefs's
future, but the code-size cost makes this change not worth the overhead
at the moment.
This commit is contained in:
Christopher Haster
2020-11-26 15:27:01 -06:00
parent aa46bb68ca
commit 499083765c
7 changed files with 33 additions and 33 deletions
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2
tests/test_orphans.toml
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@@ -59,7 +59,7 @@ code = '''
[[case]] # reentrant testing for orphans, basically just spam mkdir/remove
reentrant = true
# TODO fix this case, caused by non-DAG trees
if = '!(DEPTH == 3 && LFS_CACHE_SIZE != 64)'
if = '!(DEPTH == 3 && LFS_BUFFER_SIZE != 64)'
define = [
{FILES=6, DEPTH=1, CYCLES=20},
{FILES=26, DEPTH=1, CYCLES=20},

4
tests/test_relocations.toml
View File

@@ -148,7 +148,7 @@ code = '''
# almost every tree operation needs a relocation
reentrant = true
# TODO fix this case, caused by non-DAG trees
if = '!(DEPTH == 3 && LFS_CACHE_SIZE != 64)'
if = '!(DEPTH == 3 && LFS_BUFFER_SIZE != 64)'
define = [
{FILES=6, DEPTH=1, CYCLES=20, LFS_BLOCK_CYCLES=1},
{FILES=26, DEPTH=1, CYCLES=20, LFS_BLOCK_CYCLES=1},
@@ -210,7 +210,7 @@ code = '''
[[case]] # reentrant testing for relocations, but now with random renames!
reentrant = true
# TODO fix this case, caused by non-DAG trees
if = '!(DEPTH == 3 && LFS_CACHE_SIZE != 64)'
if = '!(DEPTH == 3 && LFS_BUFFER_SIZE != 64)'
define = [
{FILES=6, DEPTH=1, CYCLES=20, LFS_BLOCK_CYCLES=1},
{FILES=26, DEPTH=1, CYCLES=20, LFS_BLOCK_CYCLES=1},

2
tests/test_truncate.toml
View File

@@ -100,7 +100,7 @@ code = '''
lfs_file_open(&lfs, &file, "sequence",
LFS_O_RDWR | LFS_O_CREAT | LFS_O_TRUNC) => 0;
size = lfs_min(lfs.cfg->cache_size, sizeof(buffer)/2);
size = lfs_min(lfs.cfg->buffer_size, sizeof(buffer)/2);
lfs_size_t qsize = size / 4;
uint8_t *wb = buffer;
uint8_t *rb = buffer + size;