diff options
| author | Jin Qian <jinqian@google.com> | 2017-04-25 16:28:48 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2017-05-21 18:43:16 +0200 |
| commit | 71a49311c55e38ba61eeb5ab96d147a35c6cba27 (patch) | |
| tree | 91e5adbe14fc8124b716d66a704a8344321679a5 /include/linux | |
| parent | 3d60b060119facda54d1a7a23ac29e229e078b64 (diff) | |
f2fs: sanity check segment count
F2FS uses 4 bytes to represent block address. As a result, supported
size of disk is 16 TB and it equals to 16 * 1024 * 1024 / 2 segments.
Signed-off-by: Jin Qian <jinqian@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/f2fs_fs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index acdeb7390..ef70be9c7 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -302,6 +302,12 @@ struct f2fs_nat_block { #define SIT_ENTRY_PER_BLOCK (PAGE_CACHE_SIZE / sizeof(struct f2fs_sit_entry)) /* + * F2FS uses 4 bytes to represent block address. As a result, supported size of + * disk is 16 TB and it equals to 16 * 1024 * 1024 / 2 segments. + */ +#define F2FS_MAX_SEGMENT ((16 * 1024 * 1024) / 2) + +/* * Note that f2fs_sit_entry->vblocks has the following bit-field information. * [15:10] : allocation type such as CURSEG_XXXX_TYPE * [9:0] : valid block count |