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block: allow bio_for_each_segment_all() to iterate over multi-page bvec

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This patch introduces one extra iterator variable to bio_for_each_segment_all(),
then we can allow bio_for_each_segment_all() to iterate over multi-page bvec.

Given it is just one mechannical & simple change on all bio_for_each_segment_all()
users, this patch does tree-wide change in one single patch, so that we can
avoid to use a temporary helper for this conversion.

Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei
2019-02-15 19:13:19 +08:00
committed by Jens Axboe
parent 2e1f4f4d24
commit 6dc4f100c1
27 changed files with 127 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
fs/btrfs/compression.c
View File

@@ -162,13 +162,14 @@ csum_failed:
} else {
int i;
struct bio_vec *bvec;
struct bvec_iter_all iter_all;
/*
* we have verified the checksum already, set page
* checked so the end_io handlers know about it
*/
ASSERT(!bio_flagged(bio, BIO_CLONED));
bio_for_each_segment_all(bvec, cb->orig_bio, i)
bio_for_each_segment_all(bvec, cb->orig_bio, i, iter_all)
SetPageChecked(bvec->bv_page);
bio_endio(cb->orig_bio);

3
fs/btrfs/disk-io.c
View File

@@ -832,9 +832,10 @@ static blk_status_t btree_csum_one_bio(struct bio *bio)
struct bio_vec *bvec;
struct btrfs_root *root;
int i, ret = 0;
struct bvec_iter_all iter_all;
ASSERT(!bio_flagged(bio, BIO_CLONED));
bio_for_each_segment_all(bvec, bio, i) {
bio_for_each_segment_all(bvec, bio, i, iter_all) {
root = BTRFS_I(bvec->bv_page->mapping->host)->root;
ret = csum_dirty_buffer(root->fs_info, bvec->bv_page);
if (ret)

9
fs/btrfs/extent_io.c
View File

@@ -2422,9 +2422,10 @@ static void end_bio_extent_writepage(struct bio *bio)
u64 start;
u64 end;
int i;
struct bvec_iter_all iter_all;
ASSERT(!bio_flagged(bio, BIO_CLONED));
bio_for_each_segment_all(bvec, bio, i) {
bio_for_each_segment_all(bvec, bio, i, iter_all) {
struct page *page = bvec->bv_page;
struct inode *inode = page->mapping->host;
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
@@ -2493,9 +2494,10 @@ static void end_bio_extent_readpage(struct bio *bio)
int mirror;
int ret;
int i;
struct bvec_iter_all iter_all;
ASSERT(!bio_flagged(bio, BIO_CLONED));
bio_for_each_segment_all(bvec, bio, i) {
bio_for_each_segment_all(bvec, bio, i, iter_all) {
struct page *page = bvec->bv_page;
struct inode *inode = page->mapping->host;
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
@@ -3635,9 +3637,10 @@ static void end_bio_extent_buffer_writepage(struct bio *bio)
struct bio_vec *bvec;
struct extent_buffer *eb;
int i, done;
struct bvec_iter_all iter_all;
ASSERT(!bio_flagged(bio, BIO_CLONED));
bio_for_each_segment_all(bvec, bio, i) {
bio_for_each_segment_all(bvec, bio, i, iter_all) {
struct page *page = bvec->bv_page;
eb = (struct extent_buffer *)page->private;

6
fs/btrfs/inode.c
View File

@@ -7777,6 +7777,7 @@ static void btrfs_retry_endio_nocsum(struct bio *bio)
struct bio_vec *bvec;
struct extent_io_tree *io_tree, *failure_tree;
int i;
struct bvec_iter_all iter_all;
if (bio->bi_status)
goto end;
@@ -7788,7 +7789,7 @@ static void btrfs_retry_endio_nocsum(struct bio *bio)
done->uptodate = 1;
ASSERT(!bio_flagged(bio, BIO_CLONED));
bio_for_each_segment_all(bvec, bio, i)
bio_for_each_segment_all(bvec, bio, i, iter_all)
clean_io_failure(BTRFS_I(inode)->root->fs_info, failure_tree,
io_tree, done->start, bvec->bv_page,
btrfs_ino(BTRFS_I(inode)), 0);
@@ -7867,6 +7868,7 @@ static void btrfs_retry_endio(struct bio *bio)
int uptodate;
int ret;
int i;
struct bvec_iter_all iter_all;
if (bio->bi_status)
goto end;
@@ -7880,7 +7882,7 @@ static void btrfs_retry_endio(struct bio *bio)
failure_tree = &BTRFS_I(inode)->io_failure_tree;
ASSERT(!bio_flagged(bio, BIO_CLONED));
bio_for_each_segment_all(bvec, bio, i) {
bio_for_each_segment_all(bvec, bio, i, iter_all) {
ret = __readpage_endio_check(inode, io_bio, i, bvec->bv_page,
bvec->bv_offset, done->start,
bvec->bv_len);

3
fs/btrfs/raid56.c
View File

@@ -1443,10 +1443,11 @@ static void set_bio_pages_uptodate(struct bio *bio)
{
struct bio_vec *bvec;
int i;
struct bvec_iter_all iter_all;
ASSERT(!bio_flagged(bio, BIO_CLONED));
bio_for_each_segment_all(bvec, bio, i)
bio_for_each_segment_all(bvec, bio, i, iter_all)
SetPageUptodate(bvec->bv_page);
}