> -----Original Message----- > From: Jaegeuk Kim [mailto:jaeg...@kernel.org] > Sent: Thursday, March 09, 2017 5:56 AM > To: Fan Li > Cc: linux-f2fs-devel@lists.sourceforge.net > Subject: Re: [f2fs-dev] [PATCH] f2fs: adjust the way of calculating nat block > > On 03/08, Fan Li wrote: > > use a slightly simpler expression to calculate nat block with nid. > > > > Signed-off-by: Fan Li <fanofcode...@samsung.com> > > --- > > fs/f2fs/node.h | 4 +--- > > 1 file changed, 1 insertion(+), 3 deletions(-) > > > > diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h index 2f9603f..f9fb5b8 > > 100644 > > --- a/fs/f2fs/node.h > > +++ b/fs/f2fs/node.h > > @@ -200,13 +200,11 @@ static inline pgoff_t current_nat_addr(struct > > f2fs_sb_info *sbi, nid_t start) > > struct f2fs_nm_info *nm_i = NM_I(sbi); > > pgoff_t block_off; > > pgoff_t block_addr; > > - int seg_off; > > > > block_off = NAT_BLOCK_OFFSET(start); > > - seg_off = block_off >> sbi->log_blocks_per_seg; > > > > block_addr = (pgoff_t)(nm_i->nat_blkaddr + > > - (seg_off << sbi->log_blocks_per_seg << 1) + > > + (block_off << 1) - > > NAK. This breaks the behavior.
OK, I'm guessing by "breaks the behavior", you mean make the code hard to understand? I was concerned the same thing, but with the context, I think most people will be able to see right through it, and it saves some calculation, makes code as simple as possible, I just think maybe it's worthy. > > Thanks, > > > (block_off & (sbi->blocks_per_seg - 1))); > > > > if (f2fs_test_bit(block_off, nm_i->nat_bitmap)) > > -- > > 2.7.4 ------------------------------------------------------------------------------ Announcing the Oxford Dictionaries API! The API offers world-renowned dictionary content that is easy and intuitive to access. Sign up for an account today to start using our lexical data to power your apps and projects. Get started today and enter our developer competition. http://sdm.link/oxford _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
