diff options
Diffstat (limited to 'fs/ext4/page-io.c')
| -rw-r--r-- | fs/ext4/page-io.c | 50 |
1 files changed, 27 insertions, 23 deletions
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index d7d0c7b46ed..b24a2541a9b 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -65,9 +65,9 @@ static void ext4_finish_bio(struct bio *bio) { int i; int error = !test_bit(BIO_UPTODATE, &bio->bi_flags); + struct bio_vec *bvec; - for (i = 0; i < bio->bi_vcnt; i++) { - struct bio_vec *bvec = &bio->bi_io_vec[i]; + bio_for_each_segment_all(bvec, bio, i) { struct page *page = bvec->bv_page; struct buffer_head *bh, *head; unsigned bio_start = bvec->bv_offset; @@ -197,14 +197,15 @@ static void dump_completed_IO(struct inode *inode, struct list_head *head) static void ext4_add_complete_io(ext4_io_end_t *io_end) { struct ext4_inode_info *ei = EXT4_I(io_end->inode); + struct ext4_sb_info *sbi = EXT4_SB(io_end->inode->i_sb); struct workqueue_struct *wq; unsigned long flags; /* Only reserved conversions from writeback should enter here */ WARN_ON(!(io_end->flag & EXT4_IO_END_UNWRITTEN)); - WARN_ON(!io_end->handle); + WARN_ON(!io_end->handle && sbi->s_journal); spin_lock_irqsave(&ei->i_completed_io_lock, flags); - wq = EXT4_SB(io_end->inode->i_sb)->rsv_conversion_wq; + wq = sbi->rsv_conversion_wq; if (list_empty(&ei->i_rsv_conversion_list)) queue_work(wq, &ei->i_rsv_conversion_work); list_add_tail(&io_end->list, &ei->i_rsv_conversion_list); @@ -297,7 +298,7 @@ ext4_io_end_t *ext4_get_io_end(ext4_io_end_t *io_end) static void ext4_end_bio(struct bio *bio, int error) { ext4_io_end_t *io_end = bio->bi_private; - sector_t bi_sector = bio->bi_sector; + sector_t bi_sector = bio->bi_iter.bi_sector; BUG_ON(!io_end); bio->bi_end_io = NULL; @@ -307,13 +308,14 @@ static void ext4_end_bio(struct bio *bio, int error) if (error) { struct inode *inode = io_end->inode; - ext4_warning(inode->i_sb, "I/O error writing to inode %lu " + ext4_warning(inode->i_sb, "I/O error %d writing to inode %lu " "(offset %llu size %ld starting block %llu)", - inode->i_ino, + error, inode->i_ino, (unsigned long long) io_end->offset, (long) io_end->size, (unsigned long long) bi_sector >> (inode->i_blkbits - 9)); + mapping_set_error(inode->i_mapping, error); } if (io_end->flag & EXT4_IO_END_UNWRITTEN) { @@ -365,7 +367,7 @@ static int io_submit_init_bio(struct ext4_io_submit *io, bio = bio_alloc(GFP_NOIO, min(nvecs, BIO_MAX_PAGES)); if (!bio) return -ENOMEM; - bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9); + bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); bio->bi_bdev = bh->b_bdev; bio->bi_end_io = ext4_end_bio; bio->bi_private = ext4_get_io_end(io->io_end); @@ -399,7 +401,8 @@ submit_and_retry: int ext4_bio_write_page(struct ext4_io_submit *io, struct page *page, int len, - struct writeback_control *wbc) + struct writeback_control *wbc, + bool keep_towrite) { struct inode *inode = page->mapping->host; unsigned block_start, blocksize; @@ -412,10 +415,24 @@ int ext4_bio_write_page(struct ext4_io_submit *io, BUG_ON(!PageLocked(page)); BUG_ON(PageWriteback(page)); - set_page_writeback(page); + if (keep_towrite) + set_page_writeback_keepwrite(page); + else + set_page_writeback(page); ClearPageError(page); /* + * Comments copied from block_write_full_page: + * + * The page straddles i_size. It must be zeroed out on each and every + * writepage invocation because it may be mmapped. "A file is mapped + * in multiples of the page size. For a file that is not a multiple of + * the page size, the remaining memory is zeroed when mapped, and + * writes to that region are not written out to the file." + */ + if (len < PAGE_CACHE_SIZE) + zero_user_segment(page, len, PAGE_CACHE_SIZE); + /* * In the first loop we prepare and mark buffers to submit. We have to * mark all buffers in the page before submitting so that * end_page_writeback() cannot be called from ext4_bio_end_io() when IO @@ -426,19 +443,6 @@ int ext4_bio_write_page(struct ext4_io_submit *io, do { block_start = bh_offset(bh); if (block_start >= len) { - /* - * Comments copied from block_write_full_page_endio: - * - * The page straddles i_size. It must be zeroed out on - * each and every writepage invocation because it may - * be mmapped. "A file is mapped in multiples of the - * page size. For a file that is not a multiple of - * the page size, the remaining memory is zeroed when - * mapped, and writes to that region are not written - * out to the file." - */ - zero_user_segment(page, block_start, - block_start + blocksize); clear_buffer_dirty(bh); set_buffer_uptodate(bh); continue; |