Commit e9cd1d9a authored Mar 01, 2023 by Jan Kara

ext2: Correct maximum ext2 filesystem block size



Ext2 has traditionally supported filesystem block sizes upto page size
or upto 65536. Macro EXT2_MAX_BLOCK_SIZE is set to 4096, however that is
never used in ext2 so practically we always allowed whatever
sb_set_blocksize() accepted. Fix value of EXT2_MAX_BLOCK_SIZE because it
will be used in the next patch.

Signed-off-by: Jan Kara <jack@suse.cz>

parent 63bceed8

fs/ext2/ext2.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -178,7 +178,7 @@ static inline struct ext2_sb_info EXT2_SB(struct super_block sb)
		* Macro-instructions used to manage several block sizes
		*/
		#define EXT2_MIN_BLOCK_SIZE 1024
		#define EXT2_MAX_BLOCK_SIZE 4096
		#define EXT2_MAX_BLOCK_SIZE 65536
		#define EXT2_MIN_BLOCK_LOG_SIZE 10
		#define EXT2_BLOCK_SIZE(s) ((s)->s_blocksize)
		#define EXT2_ADDR_PER_BLOCK(s) (EXT2_BLOCK_SIZE(s) / sizeof (__u32))