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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-12-19 17:26:29 (GMT) |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-12-23 10:23:29 (GMT) |
| commit | af14a1ad792621942a03e4bd0e5f17b6e177e2e0 (patch) | |
| tree | b91e77a8a1a373ca3dfcc84ec0feb243fb74e2e5 /fs/ubifs/ubifs.h | |
| parent | d3cf502b6ccee1c52890d42cd18cbc98b7526126 (diff) | |
| download | linux-af14a1ad792621942a03e4bd0e5f17b6e177e2e0.tar.xz | |
UBIFS: fix available blocks count
Take into account that 2 eraseblocks are never available because
they are reserved for the index. This gives more realistic count
of FS blocks.
To avoid future confusions like this, introduce a constant.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs/ubifs.h')
| -rw-r--r-- | fs/ubifs/ubifs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index f8ef7c1..543e850 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -63,6 +63,14 @@ #define SQNUM_WARN_WATERMARK 0xFFFFFFFF00000000ULL #define SQNUM_WATERMARK 0xFFFFFFFFFF000000ULL +/* + * Minimum amount of LEBs reserved for the index. At present the index needs at + * least 2 LEBs: one for the index head and one for in-the-gaps method (which + * currently does not cater for the index head and so excludes it from + * consideration). + */ +#define MIN_INDEX_LEBS 2 + /* Minimum amount of data UBIFS writes to the flash */ #define MIN_WRITE_SZ (UBIFS_DATA_NODE_SZ + 8) |