diff options
| author |   Arve Hjønnevåg <arve@android.com> | 2012-03-20 16:01:31 -0700 |
|---|---|---|
| committer |   Anton Vorontsov <anton@enomsg.org> | 2013-04-03 21:49:28 -0700 |
| commit | 422ca8608c49d1e9bfed1c58a1ca448a8a38c0ad (patch) | |
| tree | 5170cd8c86c720a8ab0932def99f61eec2488bbe /fs/pstore | |
| parent | pstore: Replace calls to kmalloc and memcpy with kmemdup (diff) | |
| download | linux-dev-422ca8608c49d1e9bfed1c58a1ca448a8a38c0ad.tar.xz linux-dev-422ca8608c49d1e9bfed1c58a1ca448a8a38c0ad.zip | |
pstore/ram: Include ecc_size when calculating ecc_block
Wastes less memory and allows using more memory for ecc than data.
Signed-off-by: Arve Hjønnevåg <arve@android.com>
[jstultz: Tweaked commit subject]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Anton Vorontsov <anton@enomsg.org>
Diffstat (limited to 'fs/pstore')
| -rw-r--r-- | fs/pstore/ram_core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index 0306303be372..e5afa222c213 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -187,7 +187,8 @@ static int persistent_ram_init_ecc(struct persistent_ram_zone *prz, prz->ecc_block_size = 128; prz->ecc_size = ecc_size; - ecc_blocks = DIV_ROUND_UP(prz->buffer_size, prz->ecc_block_size); + ecc_blocks = DIV_ROUND_UP(prz->buffer_size - prz->ecc_size, + prz->ecc_block_size + prz->ecc_size); ecc_total = (ecc_blocks + 1) * prz->ecc_size; if (ecc_total >= prz->buffer_size) { pr_err("%s: invalid ecc_size %u (total %zu, buffer size %zu)\n", |