Commit 795c7a44 authored Apr 25, 2017 by Jin Qian Committed by Gerrit - the friendly Code Review server Sep 03, 2017

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 <jinqian@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git


Git-commit: b9dd46188edc2f0d1f37328637860bb65a771124
Signed-off-by: Dennis Cagle <dcagle@codeaurora.org>

parent 023fb720

include/linux/f2fs_fs.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -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