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authorChangman Lee <cm224.lee@samsung.com>2014-05-12 07:27:43 +0400
committerJaegeuk Kim <jaegeuk@kernel.org>2014-06-04 08:34:30 +0400
commit1dbe4152168d44fa164edbdc9f1243de70b98f7a (patch)
tree205318206e29db519ad1aad5e8042ae879c77184 /include/linux/f2fs_fs.h
parentbac4eef6537a663585f3fb3d633a629c72e3b73d (diff)
downloadlinux-1dbe4152168d44fa164edbdc9f1243de70b98f7a.tar.xz
f2fs: large volume support
f2fs's cp has one page which consists of struct f2fs_checkpoint and version bitmap of sit and nat. To support lots of segments, we need more blocks for sit bitmap. So let's arrange sit bitmap as following: +-----------------+------------+ | f2fs_checkpoint | sit bitmap | | + nat bitmap | | +-----------------+------------+ 0 4k N blocks Signed-off-by: Changman Lee <cm224.lee@samsung.com> [Jaegeuk Kim: simple code change for readability] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'include/linux/f2fs_fs.h')
-rw-r--r--include/linux/f2fs_fs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index ba6f3127738f..6ff0b0b42d47 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -19,6 +19,7 @@
#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 ((block_t)0) /* used as block_t addresses */
#define NEW_ADDR ((block_t)-1) /* used as block_t addresses */
@@ -75,6 +76,7 @@ struct f2fs_super_block {
__le16 volume_name[512]; /* volume name */
__le32 extension_count; /* # of extensions below */
__u8 extension_list[F2FS_MAX_EXTENSION][8]; /* extension array */
+ __le32 cp_payload;
} __packed;
/*