Hi, On Thu, 10 Aug 2006, Andrew Morton wrote: > For ext3 on x86: > > CONFIG_LBD=y: > > box:/usr/src/25> size fs/jbd/jbd.o fs/ext3/ext3.o > text data bss dec hex filename > 51076 8 32 51116 c7ac fs/jbd/jbd.o > 87466 1020 4 88490 159aa fs/ext3/ext3.o > > CONFIG_LBD=n: > > box:/usr/src/25> size fs/jbd/jbd.o fs/ext3/ext3.o > text data bss dec hex filename > 51133 8 32 51173 c7e5 fs/jbd/jbd.o > 87679 1020 4 88703 15a7f fs/ext3/ext3.o > > That's a grand total of 270 bytes of text saved. aka 0.19%. > > We'll save four bytes in the inode (unlikely to save anything due to slab > packing). sector_t is used in multiple structures (bio/request/buffer_head), which quickly adds up. ext3 is also currently not a very heavy sector_t user, if you try this with block/ you get a more than 3% difference. bye, Roman - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
