From e4f60027026c438d21b1db83d69e0dd2d92c6e56 Mon Sep 17 00:00:00 2001 From: Jin Qian Date: Tue, 25 Apr 2017 16:28:48 -0700 Subject: [PATCH] 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. Change-Id: I64d9be6dcc4ab5d8a45359c69d6163ed0209e8fe Signed-off-by: Jin Qian Signed-off-by: Jaegeuk Kim Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git Git-commit: b9dd46188edc2f0d1f37328637860bb65a771124 Signed-off-by: Dennis Cagle --- include/linux/f2fs_fs.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index 3d6e6ce44c5c..005d5c3e200e 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -289,6 +289,12 @@ struct f2fs_nat_block { */ #define F2FS_MAX_SEGMENT ((16 * 1024 * 1024) / 2) +/* + * 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