diff options
Diffstat (limited to 'include/f2fs_fs.h')
| -rw-r--r-- | include/f2fs_fs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h index 53b8cb9..80ce918 100644 --- a/include/f2fs_fs.h +++ b/include/f2fs_fs.h @@ -221,6 +221,7 @@ enum { #define F2FS_LOG_SECTORS_PER_BLOCK 3 /* 4KB: F2FS_BLKSIZE */ #define F2FS_BLKSIZE 4096 /* support only 4KB block */ #define F2FS_MAX_EXTENSION 64 /* # of extension entries */ +#define F2FS_BLK_ALIGN(x) (((x) + F2FS_BLKSIZE - 1) / F2FS_BLKSIZE) #define NULL_ADDR 0x0U #define NEW_ADDR -1U @@ -456,6 +457,13 @@ 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) +#define MAX_SIT_BITMAP_SIZE ((F2FS_MAX_SEGMENT / SIT_ENTRY_PER_BLOCK) / 8) + +/* * 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 |