On 11/25, Jaegeuk Kim wrote:
> This patch cleans up blks and bytes conversions.
>
> Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
> ---
> fs/f2fs/data.c | 46 +++++++++++++++++++++-------------------------
> 1 file changed, 21 insertions(+), 25 deletions(-)
>
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index a8612c6f40ab..a84e5bc09337 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -1750,6 +1750,16 @@ bool f2fs_overwrite_io(struct inode *inode, loff_t
> pos, size_t len)
> return true;
> }
>
> +static inline u64 bytes_to_blks(struct inode *inode, u64 bytes)
> +{
> + return (bytes >> inode->i_blkbits);
> +}
> +
> +static inline u64 blks_to_bytes(struct inode *inode, u64 blks)
> +{
> + return (blks << inode->i_blkbits);
> +}
> +
> static int __get_data_block(struct inode *inode, sector_t iblock,
> struct buffer_head *bh, int create, int flag,
> pgoff_t *next_pgofs, int seg_type, bool may_write)
> @@ -1758,7 +1768,7 @@ static int __get_data_block(struct inode *inode,
> sector_t iblock,
> int err;
>
> map.m_lblk = iblock;
> - map.m_len = bh->b_size >> inode->i_blkbits;
> + map.m_len = bytes_to_blks(inode, bh->b_size);
> map.m_next_pgofs = next_pgofs;
> map.m_next_extent = NULL;
> map.m_seg_type = seg_type;
> @@ -1768,7 +1778,7 @@ static int __get_data_block(struct inode *inode,
> sector_t iblock,
> if (!err) {
> map_bh(bh, inode->i_sb, map.m_pblk);
> bh->b_state = (bh->b_state & ~F2FS_MAP_FLAGS) | map.m_flags;
> - bh->b_size = (u64)map.m_len << inode->i_blkbits;
> + bh->b_size = blks_to_bytes(inode, map.m_len);
> }
> return err;
> }
> @@ -1808,16 +1818,6 @@ static int get_data_block_bmap(struct inode *inode,
> sector_t iblock,
> NO_CHECK_TYPE, create);
> }
>
> -static inline u64 bytes_to_blks(struct inode *inode, u64 bytes)
> -{
> - return (bytes >> inode->i_blkbits);
> -}
> -
> -static inline u64 blks_to_bytes(struct inode *inode, u64 blks)
> -{
> - return (blks << inode->i_blkbits);
> -}
> -
> static int f2fs_xattr_fiemap(struct inode *inode,
> struct fiemap_extent_info *fieinfo)
> {
> @@ -2053,8 +2053,7 @@ static int f2fs_read_single_page(struct inode *inode,
> struct page *page,
> bool is_readahead)
> {
> struct bio *bio = *bio_ret;
> - const unsigned blkbits = inode->i_blkbits;
> - const unsigned blocksize = 1 << blkbits;
> + const unsigned blocksize = blks_to_bytes(inode, 1);
> sector_t block_in_file;
> sector_t last_block;
> sector_t last_block_in_file;
> @@ -2063,8 +2062,8 @@ static int f2fs_read_single_page(struct inode *inode,
> struct page *page,
>
> block_in_file = (sector_t)page_index(page);
> last_block = block_in_file + nr_pages;
> - last_block_in_file = (f2fs_readpage_limit(inode) + blocksize - 1) >>
> - blkbits;
> + last_block_in_file = bytes_to_blks(inode,
> + f2fs_readpage_limit(inode) + blocksize - 1);
> if (last_block > last_block_in_file)
> last_block = last_block_in_file;
>
> @@ -2177,16 +2176,15 @@ int f2fs_read_multi_pages(struct compress_ctx *cc,
> struct bio **bio_ret,
> struct bio *bio = *bio_ret;
> unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size;
> sector_t last_block_in_file;
> - const unsigned blkbits = inode->i_blkbits;
> - const unsigned blocksize = 1 << blkbits;
> + const unsigned blocksize = blks_to_bytes(inode, 1);
> struct decompress_io_ctx *dic = NULL;
> int i;
> int ret = 0;
>
> f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc));
>
> - last_block_in_file = (f2fs_readpage_limit(inode) +
> - blocksize - 1) >> blkbits;
> + last_block_in_file = bytes_to_blks(inode,
> + f2fs_readpage_limit(inode) + blocksize - 1);
>
> /* get rid of pages beyond EOF */
> for (i = 0; i < cc->cluster_size; i++) {
> @@ -3968,7 +3966,6 @@ static int check_swap_activate(struct swap_info_struct
> *sis,
> struct inode *inode = mapping->host;
> unsigned blocks_per_page;
> unsigned long page_no;
> - unsigned blkbits;
> sector_t probe_block;
> sector_t last_block;
> sector_t lowest_block = -1;
> @@ -3979,8 +3976,7 @@ static int check_swap_activate(struct swap_info_struct
> *sis,
> if (PAGE_SIZE == F2FS_BLKSIZE)
> return check_swap_activate_fast(sis, swap_file, span);
>
> - blkbits = inode->i_blkbits;
> - blocks_per_page = PAGE_SIZE >> blkbits;
> + blocks_per_page = bytes_to_blks(inode, PAGE_SIZE);
>
> /*
> * Map all the blocks into the extent list. This code doesn't try
> @@ -3988,7 +3984,7 @@ static int check_swap_activate(struct swap_info_struct
> *sis,
> */
> probe_block = 0;
> page_no = 0;
> - last_block = i_size_read(inode) >> blkbits;
> + last_block = bytes_to_blks(inode, i_size_read(inode));
> while ((probe_block + blocks_per_page) <= last_block &&
> page_no < sis->max) {
> unsigned block_in_page;
> @@ -4028,7 +4024,7 @@ static int check_swap_activate(struct swap_info_struct
> *sis,
> }
> }
>
> - first_block >>= (PAGE_SHIFT - blkbits);
> + first_block >>= (PAGE_SHIFT - inode->i_blkbits);
> if (page_no) { /* exclude the header page */
> if (first_block < lowest_block)
> lowest_block = first_block;
> --
> 2.29.2.454.gaff20da3a2-goog
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