From 4f024f3797c43cb4b73cd2c50cec728842d0e49e Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Fri, 11 Oct 2013 15:44:27 -0700 Subject: block: Abstract out bvec iterator MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Immutable biovecs are going to require an explicit iterator. To implement immutable bvecs, a later patch is going to add a bi_bvec_done member to this struct; for now, this patch effectively just renames things. Signed-off-by: Kent Overstreet Cc: Jens Axboe Cc: Geert Uytterhoeven Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: "Ed L. Cashin" Cc: Nick Piggin Cc: Lars Ellenberg Cc: Jiri Kosina Cc: Matthew Wilcox Cc: Geoff Levand Cc: Yehuda Sadeh Cc: Sage Weil Cc: Alex Elder Cc: ceph-devel@vger.kernel.org Cc: Joshua Morris Cc: Philip Kelleher Cc: Rusty Russell Cc: "Michael S. Tsirkin" Cc: Konrad Rzeszutek Wilk Cc: Jeremy Fitzhardinge Cc: Neil Brown Cc: Alasdair Kergon Cc: Mike Snitzer Cc: dm-devel@redhat.com Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: linux390@de.ibm.com Cc: Boaz Harrosh Cc: Benny Halevy Cc: "James E.J. Bottomley" Cc: Greg Kroah-Hartman Cc: "Nicholas A. Bellinger" Cc: Alexander Viro Cc: Chris Mason Cc: "Theodore Ts'o" Cc: Andreas Dilger Cc: Jaegeuk Kim Cc: Steven Whitehouse Cc: Dave Kleikamp Cc: Joern Engel Cc: Prasad Joshi Cc: Trond Myklebust Cc: KONISHI Ryusuke Cc: Mark Fasheh Cc: Joel Becker Cc: Ben Myers Cc: xfs@oss.sgi.com Cc: Steven Rostedt Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Len Brown Cc: Pavel Machek Cc: "Rafael J. Wysocki" Cc: Herton Ronaldo Krzesinski Cc: Ben Hutchings Cc: Andrew Morton Cc: Guo Chao Cc: Tejun Heo Cc: Asai Thambi S P Cc: Selvan Mani Cc: Sam Bradshaw Cc: Wei Yongjun Cc: "Roger Pau Monné" Cc: Jan Beulich Cc: Stefano Stabellini Cc: Ian Campbell Cc: Sebastian Ott Cc: Christian Borntraeger Cc: Minchan Kim Cc: Jiang Liu Cc: Nitin Gupta Cc: Jerome Marchand Cc: Joe Perches Cc: Peng Tao Cc: Andy Adamson Cc: fanchaoting Cc: Jie Liu Cc: Sunil Mushran Cc: "Martin K. Petersen" Cc: Namjae Jeon Cc: Pankaj Kumar Cc: Dan Magenheimer Cc: Mel Gorman 6 --- fs/btrfs/inode.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) (limited to 'fs/btrfs/inode.c') diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index d6630dc130ba..7ab0e94ad492 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1577,7 +1577,7 @@ int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, unsigned long bio_flags) { struct btrfs_root *root = BTRFS_I(page->mapping->host)->root; - u64 logical = (u64)bio->bi_sector << 9; + u64 logical = (u64)bio->bi_iter.bi_sector << 9; u64 length = 0; u64 map_length; int ret; @@ -1585,7 +1585,7 @@ int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, if (bio_flags & EXTENT_BIO_COMPRESSED) return 0; - length = bio->bi_size; + length = bio->bi_iter.bi_size; map_length = length; ret = btrfs_map_block(root->fs_info, rw, logical, &map_length, NULL, 0); @@ -6894,7 +6894,8 @@ static void btrfs_end_dio_bio(struct bio *bio, int err) printk(KERN_ERR "btrfs direct IO failed ino %llu rw %lu " "sector %#Lx len %u err no %d\n", btrfs_ino(dip->inode), bio->bi_rw, - (unsigned long long)bio->bi_sector, bio->bi_size, err); + (unsigned long long)bio->bi_iter.bi_sector, + bio->bi_iter.bi_size, err); dip->errors = 1; /* @@ -6985,7 +6986,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, struct bio *bio; struct bio *orig_bio = dip->orig_bio; struct bio_vec *bvec = orig_bio->bi_io_vec; - u64 start_sector = orig_bio->bi_sector; + u64 start_sector = orig_bio->bi_iter.bi_sector; u64 file_offset = dip->logical_offset; u64 submit_len = 0; u64 map_length; @@ -6993,7 +6994,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, int ret = 0; int async_submit = 0; - map_length = orig_bio->bi_size; + map_length = orig_bio->bi_iter.bi_size; ret = btrfs_map_block(root->fs_info, rw, start_sector << 9, &map_length, NULL, 0); if (ret) { @@ -7001,7 +7002,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, return -EIO; } - if (map_length >= orig_bio->bi_size) { + if (map_length >= orig_bio->bi_iter.bi_size) { bio = orig_bio; goto submit; } @@ -7053,7 +7054,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, bio->bi_private = dip; bio->bi_end_io = btrfs_end_dio_bio; - map_length = orig_bio->bi_size; + map_length = orig_bio->bi_iter.bi_size; ret = btrfs_map_block(root->fs_info, rw, start_sector << 9, &map_length, NULL, 0); @@ -7111,7 +7112,8 @@ static void btrfs_submit_direct(int rw, struct bio *dio_bio, if (!skip_sum && !write) { csum_size = btrfs_super_csum_size(root->fs_info->super_copy); - sum_len = dio_bio->bi_size >> inode->i_sb->s_blocksize_bits; + sum_len = dio_bio->bi_iter.bi_size >> + inode->i_sb->s_blocksize_bits; sum_len *= csum_size; } else { sum_len = 0; @@ -7126,8 +7128,8 @@ static void btrfs_submit_direct(int rw, struct bio *dio_bio, dip->private = dio_bio->bi_private; dip->inode = inode; dip->logical_offset = file_offset; - dip->bytes = dio_bio->bi_size; - dip->disk_bytenr = (u64)dio_bio->bi_sector << 9; + dip->bytes = dio_bio->bi_iter.bi_size; + dip->disk_bytenr = (u64)dio_bio->bi_iter.bi_sector << 9; io_bio->bi_private = dip; dip->errors = 0; dip->orig_bio = io_bio; -- cgit v1.2.3