Btrfs: use wrapper page_offset
Use wrapper page_offset to get byte-offset into filesystem object for page. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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da633a4217
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@ -420,7 +420,7 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root,
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static int csum_dirty_buffer(struct btrfs_root *root, struct page *page)
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static int csum_dirty_buffer(struct btrfs_root *root, struct page *page)
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{
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{
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struct extent_io_tree *tree;
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struct extent_io_tree *tree;
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u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
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u64 start = page_offset(page);
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u64 found_start;
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u64 found_start;
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struct extent_buffer *eb;
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struct extent_buffer *eb;
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@ -1834,7 +1834,7 @@ int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
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*/
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*/
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static void check_page_uptodate(struct extent_io_tree *tree, struct page *page)
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static void check_page_uptodate(struct extent_io_tree *tree, struct page *page)
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{
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{
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u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
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u64 start = page_offset(page);
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u64 end = start + PAGE_CACHE_SIZE - 1;
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u64 end = start + PAGE_CACHE_SIZE - 1;
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if (test_range_bit(tree, start, end, EXTENT_UPTODATE, 1, NULL))
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if (test_range_bit(tree, start, end, EXTENT_UPTODATE, 1, NULL))
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SetPageUptodate(page);
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SetPageUptodate(page);
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@ -1846,7 +1846,7 @@ static void check_page_uptodate(struct extent_io_tree *tree, struct page *page)
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*/
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*/
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static void check_page_locked(struct extent_io_tree *tree, struct page *page)
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static void check_page_locked(struct extent_io_tree *tree, struct page *page)
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{
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{
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u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
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u64 start = page_offset(page);
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u64 end = start + PAGE_CACHE_SIZE - 1;
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u64 end = start + PAGE_CACHE_SIZE - 1;
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if (!test_range_bit(tree, start, end, EXTENT_LOCKED, 0, NULL))
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if (!test_range_bit(tree, start, end, EXTENT_LOCKED, 0, NULL))
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unlock_page(page);
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unlock_page(page);
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@ -1960,7 +1960,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 start,
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return -EIO;
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return -EIO;
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}
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}
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bio->bi_bdev = dev->bdev;
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bio->bi_bdev = dev->bdev;
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bio_add_page(bio, page, length, start-page_offset(page));
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bio_add_page(bio, page, length, start - page_offset(page));
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btrfsic_submit_bio(WRITE_SYNC, bio);
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btrfsic_submit_bio(WRITE_SYNC, bio);
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wait_for_completion(&compl);
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wait_for_completion(&compl);
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@ -2293,8 +2293,7 @@ static void end_bio_extent_writepage(struct bio *bio, int err)
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struct page *page = bvec->bv_page;
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struct page *page = bvec->bv_page;
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tree = &BTRFS_I(page->mapping->host)->io_tree;
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tree = &BTRFS_I(page->mapping->host)->io_tree;
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start = ((u64)page->index << PAGE_CACHE_SHIFT) +
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start = page_offset(page) + bvec->bv_offset;
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bvec->bv_offset;
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end = start + bvec->bv_len - 1;
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end = start + bvec->bv_len - 1;
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if (bvec->bv_offset == 0 && bvec->bv_len == PAGE_CACHE_SIZE)
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if (bvec->bv_offset == 0 && bvec->bv_len == PAGE_CACHE_SIZE)
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@ -2353,8 +2352,7 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
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(long int)bio->bi_bdev);
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(long int)bio->bi_bdev);
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tree = &BTRFS_I(page->mapping->host)->io_tree;
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tree = &BTRFS_I(page->mapping->host)->io_tree;
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start = ((u64)page->index << PAGE_CACHE_SHIFT) +
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start = page_offset(page) + bvec->bv_offset;
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bvec->bv_offset;
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end = start + bvec->bv_len - 1;
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end = start + bvec->bv_len - 1;
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if (bvec->bv_offset == 0 && bvec->bv_len == PAGE_CACHE_SIZE)
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if (bvec->bv_offset == 0 && bvec->bv_len == PAGE_CACHE_SIZE)
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@ -2471,7 +2469,7 @@ static int __must_check submit_one_bio(int rw, struct bio *bio,
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struct extent_io_tree *tree = bio->bi_private;
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struct extent_io_tree *tree = bio->bi_private;
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u64 start;
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u64 start;
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start = ((u64)page->index << PAGE_CACHE_SHIFT) + bvec->bv_offset;
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start = page_offset(page) + bvec->bv_offset;
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bio->bi_private = NULL;
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bio->bi_private = NULL;
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@ -2595,7 +2593,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
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unsigned long *bio_flags)
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unsigned long *bio_flags)
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{
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{
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struct inode *inode = page->mapping->host;
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struct inode *inode = page->mapping->host;
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u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
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u64 start = page_offset(page);
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u64 page_end = start + PAGE_CACHE_SIZE - 1;
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u64 page_end = start + PAGE_CACHE_SIZE - 1;
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u64 end;
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u64 end;
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u64 cur = start;
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u64 cur = start;
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@ -2806,7 +2804,7 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
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struct inode *inode = page->mapping->host;
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struct inode *inode = page->mapping->host;
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struct extent_page_data *epd = data;
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struct extent_page_data *epd = data;
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struct extent_io_tree *tree = epd->tree;
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struct extent_io_tree *tree = epd->tree;
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u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
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u64 start = page_offset(page);
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u64 delalloc_start;
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u64 delalloc_start;
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u64 page_end = start + PAGE_CACHE_SIZE - 1;
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u64 page_end = start + PAGE_CACHE_SIZE - 1;
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u64 end;
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u64 end;
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@ -3674,7 +3672,7 @@ int extent_invalidatepage(struct extent_io_tree *tree,
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struct page *page, unsigned long offset)
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struct page *page, unsigned long offset)
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{
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{
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struct extent_state *cached_state = NULL;
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struct extent_state *cached_state = NULL;
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u64 start = ((u64)page->index << PAGE_CACHE_SHIFT);
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u64 start = page_offset(page);
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u64 end = start + PAGE_CACHE_SIZE - 1;
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u64 end = start + PAGE_CACHE_SIZE - 1;
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size_t blocksize = page->mapping->host->i_sb->s_blocksize;
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size_t blocksize = page->mapping->host->i_sb->s_blocksize;
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@ -3700,7 +3698,7 @@ int try_release_extent_state(struct extent_map_tree *map,
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struct extent_io_tree *tree, struct page *page,
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struct extent_io_tree *tree, struct page *page,
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gfp_t mask)
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gfp_t mask)
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{
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{
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u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
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u64 start = page_offset(page);
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u64 end = start + PAGE_CACHE_SIZE - 1;
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u64 end = start + PAGE_CACHE_SIZE - 1;
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int ret = 1;
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int ret = 1;
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@ -3739,7 +3737,7 @@ int try_release_extent_mapping(struct extent_map_tree *map,
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gfp_t mask)
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gfp_t mask)
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{
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{
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struct extent_map *em;
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struct extent_map *em;
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u64 start = (u64)page->index << PAGE_CACHE_SHIFT;
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u64 start = page_offset(page);
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u64 end = start + PAGE_CACHE_SIZE - 1;
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u64 end = start + PAGE_CACHE_SIZE - 1;
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if ((mask & __GFP_WAIT) &&
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if ((mask & __GFP_WAIT) &&
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@ -2062,7 +2062,7 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end,
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static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end,
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static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end,
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struct extent_state *state, int mirror)
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struct extent_state *state, int mirror)
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{
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{
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size_t offset = start - ((u64)page->index << PAGE_CACHE_SHIFT);
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size_t offset = start - page_offset(page);
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struct inode *inode = page->mapping->host;
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struct inode *inode = page->mapping->host;
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struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
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struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
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char *kaddr;
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char *kaddr;
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@ -6752,8 +6752,7 @@ static void btrfs_invalidatepage(struct page *page, unsigned long offset)
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return;
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return;
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}
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}
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lock_extent_bits(tree, page_start, page_end, 0, &cached_state);
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lock_extent_bits(tree, page_start, page_end, 0, &cached_state);
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ordered = btrfs_lookup_ordered_extent(inode,
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ordered = btrfs_lookup_ordered_extent(inode, page_offset(page));
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page_offset(page));
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if (ordered) {
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if (ordered) {
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/*
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/*
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* IO on this page will never be started, so we need
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* IO on this page will never be started, so we need
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@ -3017,7 +3017,7 @@ static int relocate_file_extent_cluster(struct inode *inode,
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}
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}
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}
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}
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page_start = (u64)page->index << PAGE_CACHE_SHIFT;
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page_start = page_offset(page);
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page_end = page_start + PAGE_CACHE_SIZE - 1;
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page_end = page_start + PAGE_CACHE_SIZE - 1;
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lock_extent(&BTRFS_I(inode)->io_tree, page_start, page_end);
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lock_extent(&BTRFS_I(inode)->io_tree, page_start, page_end);
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