Commit 8a21984d authored Sep 25, 2014 by Dan Carpenter Committed by Jaegeuk Kim Sep 30, 2014

f2fs: potential shift wrapping buf in f2fs_trim_fs()



My static checker complains that segment is a u64 but only the lower 31
bits can be used before we hit a shift wrapping bug.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent 44c16156

fs/f2fs/segment.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -55,7 +55,7 @@
		#define TOTAL_BLKS(sbi) (TOTAL_SEGS(sbi) << sbi->log_blocks_per_seg)

		#define MAX_BLKADDR(sbi) (SEG0_BLKADDR(sbi) + TOTAL_BLKS(sbi))
		#define SEGMENT_SIZE(sbi) (1 << (sbi->log_blocksize + \
		#define SEGMENT_SIZE(sbi) (1ULL << (sbi->log_blocksize + \
		sbi->log_blocks_per_seg))

		#define START_BLOCK(sbi, segno) (SEG0_BLKADDR(sbi) + \