| inode.c (0b02f4c0d6d9e2c611dfbdd4317193e9dca740e6) | inode.c (f456767d3391e9f7d9d25a2e7241d75676dc19da) |
|---|---|
| 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * linux/fs/ext4/inode.c 4 * 5 * Copyright (C) 1992, 1993, 1994, 1995 6 * Remy Card (card@masi.ibp.fr) 7 * Laboratoire MASI - Institut Blaise Pascal 8 * Universite Pierre et Marie Curie (Paris VI) --- 1581 unchanged lines hidden (view full) --- 1590 } 1591 ei->i_reserved_data_blocks++; 1592 trace_ext4_da_reserve_space(inode); 1593 spin_unlock(&ei->i_block_reservation_lock); 1594 1595 return 0; /* success */ 1596} 1597 | 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * linux/fs/ext4/inode.c 4 * 5 * Copyright (C) 1992, 1993, 1994, 1995 6 * Remy Card (card@masi.ibp.fr) 7 * Laboratoire MASI - Institut Blaise Pascal 8 * Universite Pierre et Marie Curie (Paris VI) --- 1581 unchanged lines hidden (view full) --- 1590 } 1591 ei->i_reserved_data_blocks++; 1592 trace_ext4_da_reserve_space(inode); 1593 spin_unlock(&ei->i_block_reservation_lock); 1594 1595 return 0; /* success */ 1596} 1597 |
| 1598static void ext4_da_release_space(struct inode *inode, int to_free) | 1598void ext4_da_release_space(struct inode *inode, int to_free) |
| 1599{ 1600 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); 1601 struct ext4_inode_info *ei = EXT4_I(inode); 1602 1603 if (!to_free) 1604 return; /* Nothing to release, exit */ 1605 1606 spin_lock(&EXT4_I(inode)->i_block_reservation_lock); --- 22 unchanged lines hidden (view full) --- 1629 1630 dquot_release_reservation_block(inode, EXT4_C2B(sbi, to_free)); 1631} 1632 1633static void ext4_da_page_release_reservation(struct page *page, 1634 unsigned int offset, 1635 unsigned int length) 1636{ | 1599{ 1600 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); 1601 struct ext4_inode_info *ei = EXT4_I(inode); 1602 1603 if (!to_free) 1604 return; /* Nothing to release, exit */ 1605 1606 spin_lock(&EXT4_I(inode)->i_block_reservation_lock); --- 22 unchanged lines hidden (view full) --- 1629 1630 dquot_release_reservation_block(inode, EXT4_C2B(sbi, to_free)); 1631} 1632 1633static void ext4_da_page_release_reservation(struct page *page, 1634 unsigned int offset, 1635 unsigned int length) 1636{ |
| 1637 int to_release = 0, contiguous_blks = 0; | 1637 int contiguous_blks = 0; |
| 1638 struct buffer_head *head, *bh; 1639 unsigned int curr_off = 0; 1640 struct inode *inode = page->mapping->host; | 1638 struct buffer_head *head, *bh; 1639 unsigned int curr_off = 0; 1640 struct inode *inode = page->mapping->host; |
| 1641 struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); | |
| 1642 unsigned int stop = offset + length; | 1641 unsigned int stop = offset + length; |
| 1643 int num_clusters; | |
| 1644 ext4_fsblk_t lblk; 1645 1646 BUG_ON(stop > PAGE_SIZE || stop < length); 1647 1648 head = page_buffers(page); 1649 bh = head; 1650 do { 1651 unsigned int next_off = curr_off + bh->b_size; 1652 1653 if (next_off > stop) 1654 break; 1655 1656 if ((offset <= curr_off) && (buffer_delay(bh))) { | 1642 ext4_fsblk_t lblk; 1643 1644 BUG_ON(stop > PAGE_SIZE || stop < length); 1645 1646 head = page_buffers(page); 1647 bh = head; 1648 do { 1649 unsigned int next_off = curr_off + bh->b_size; 1650 1651 if (next_off > stop) 1652 break; 1653 1654 if ((offset <= curr_off) && (buffer_delay(bh))) { |
| 1657 to_release++; | |
| 1658 contiguous_blks++; 1659 clear_buffer_delay(bh); 1660 } else if (contiguous_blks) { 1661 lblk = page->index << 1662 (PAGE_SHIFT - inode->i_blkbits); 1663 lblk += (curr_off >> inode->i_blkbits) - 1664 contiguous_blks; | 1655 contiguous_blks++; 1656 clear_buffer_delay(bh); 1657 } else if (contiguous_blks) { 1658 lblk = page->index << 1659 (PAGE_SHIFT - inode->i_blkbits); 1660 lblk += (curr_off >> inode->i_blkbits) - 1661 contiguous_blks; |
| 1665 ext4_es_remove_extent(inode, lblk, contiguous_blks); | 1662 ext4_es_remove_blks(inode, lblk, contiguous_blks); |
| 1666 contiguous_blks = 0; 1667 } 1668 curr_off = next_off; 1669 } while ((bh = bh->b_this_page) != head); 1670 1671 if (contiguous_blks) { 1672 lblk = page->index << (PAGE_SHIFT - inode->i_blkbits); 1673 lblk += (curr_off >> inode->i_blkbits) - contiguous_blks; | 1663 contiguous_blks = 0; 1664 } 1665 curr_off = next_off; 1666 } while ((bh = bh->b_this_page) != head); 1667 1668 if (contiguous_blks) { 1669 lblk = page->index << (PAGE_SHIFT - inode->i_blkbits); 1670 lblk += (curr_off >> inode->i_blkbits) - contiguous_blks; |
| 1674 ext4_es_remove_extent(inode, lblk, contiguous_blks); | 1671 ext4_es_remove_blks(inode, lblk, contiguous_blks); |
| 1675 } 1676 | 1672 } 1673 |
| 1677 /* If we have released all the blocks belonging to a cluster, then we 1678 * need to release the reserved space for that cluster. */ 1679 num_clusters = EXT4_NUM_B2C(sbi, to_release); 1680 while (num_clusters > 0) { 1681 lblk = (page->index << (PAGE_SHIFT - inode->i_blkbits)) + 1682 ((num_clusters - 1) << sbi->s_cluster_bits); 1683 if (sbi->s_cluster_ratio == 1 || 1684 !ext4_es_scan_clu(inode, &ext4_es_is_delayed, lblk)) 1685 ext4_da_release_space(inode, 1); 1686 1687 num_clusters--; 1688 } | |
| 1689} 1690 1691/* 1692 * Delayed allocation stuff 1693 */ 1694 1695struct mpage_da_data { 1696 struct inode *inode; --- 4613 unchanged lines hidden --- | 1674} 1675 1676/* 1677 * Delayed allocation stuff 1678 */ 1679 1680struct mpage_da_data { 1681 struct inode *inode; --- 4613 unchanged lines hidden --- |