| extents.c (4255c224b97f6d286d9d791962dec2b02c652b42) | extents.c (0f2af21aae11972fa924374ddcf52e88347cf5a8) |
|---|---|
| 1/* 2 * Copyright (c) 2003-2006, Cluster File Systems, Inc, info@clusterfs.com 3 * Written by Alex Tomas <alex@clusterfs.com> 4 * 5 * Architecture independence: 6 * Copyright (c) 2005, Bull S.A. 7 * Written by Pierre Peiffer <pierre.peiffer@bull.net> 8 * --- 4783 unchanged lines hidden (view full) --- 4792 4793 lblk = start >> blkbits; 4794 max_blocks = (end >> blkbits); 4795 if (max_blocks < lblk) 4796 max_blocks = 0; 4797 else 4798 max_blocks -= lblk; 4799 | 1/* 2 * Copyright (c) 2003-2006, Cluster File Systems, Inc, info@clusterfs.com 3 * Written by Alex Tomas <alex@clusterfs.com> 4 * 5 * Architecture independence: 6 * Copyright (c) 2005, Bull S.A. 7 * Written by Pierre Peiffer <pierre.peiffer@bull.net> 8 * --- 4783 unchanged lines hidden (view full) --- 4792 4793 lblk = start >> blkbits; 4794 max_blocks = (end >> blkbits); 4795 if (max_blocks < lblk) 4796 max_blocks = 0; 4797 else 4798 max_blocks -= lblk; 4799 |
| 4800 flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT | 4801 EXT4_GET_BLOCKS_CONVERT_UNWRITTEN | 4802 EXT4_EX_NOCACHE; 4803 if (mode & FALLOC_FL_KEEP_SIZE) 4804 flags |= EXT4_GET_BLOCKS_KEEP_SIZE; 4805 | |
| 4806 mutex_lock(&inode->i_mutex); 4807 4808 /* 4809 * Indirect files do not support unwritten extnets 4810 */ 4811 if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { 4812 ret = -EOPNOTSUPP; 4813 goto out_mutex; 4814 } 4815 4816 if (!(mode & FALLOC_FL_KEEP_SIZE) && 4817 offset + len > i_size_read(inode)) { 4818 new_size = offset + len; 4819 ret = inode_newsize_ok(inode, new_size); 4820 if (ret) 4821 goto out_mutex; | 4800 mutex_lock(&inode->i_mutex); 4801 4802 /* 4803 * Indirect files do not support unwritten extnets 4804 */ 4805 if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { 4806 ret = -EOPNOTSUPP; 4807 goto out_mutex; 4808 } 4809 4810 if (!(mode & FALLOC_FL_KEEP_SIZE) && 4811 offset + len > i_size_read(inode)) { 4812 new_size = offset + len; 4813 ret = inode_newsize_ok(inode, new_size); 4814 if (ret) 4815 goto out_mutex; |
| 4822 /* 4823 * If we have a partial block after EOF we have to allocate 4824 * the entire block. 4825 */ 4826 if (partial_end) 4827 max_blocks += 1; | |
| 4828 } 4829 | 4816 } 4817 |
| 4818 flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT; 4819 if (mode & FALLOC_FL_KEEP_SIZE) 4820 flags |= EXT4_GET_BLOCKS_KEEP_SIZE; 4821 4822 /* Preallocate the range including the unaligned edges */ 4823 if (partial_begin || partial_end) { 4824 ret = ext4_alloc_file_blocks(file, 4825 round_down(offset, 1 << blkbits) >> blkbits, 4826 (round_up((offset + len), 1 << blkbits) - 4827 round_down(offset, 1 << blkbits)) >> blkbits, 4828 new_size, flags, mode); 4829 if (ret) 4830 goto out_mutex; 4831 4832 } 4833 4834 /* Zero range excluding the unaligned edges */ |
|
| 4830 if (max_blocks > 0) { | 4835 if (max_blocks > 0) { |
| 4836 flags |= (EXT4_GET_BLOCKS_CONVERT_UNWRITTEN | 4837 EXT4_EX_NOCACHE); |
|
| 4831 4832 /* Now release the pages and zero block aligned part of pages*/ 4833 truncate_pagecache_range(inode, start, end - 1); 4834 inode->i_mtime = inode->i_ctime = ext4_current_time(inode); 4835 4836 /* Wait all existing dio workers, newcomers will block on i_mutex */ 4837 ext4_inode_block_unlocked_dio(inode); 4838 inode_dio_wait(inode); --- 861 unchanged lines hidden --- | 4838 4839 /* Now release the pages and zero block aligned part of pages*/ 4840 truncate_pagecache_range(inode, start, end - 1); 4841 inode->i_mtime = inode->i_ctime = ext4_current_time(inode); 4842 4843 /* Wait all existing dio workers, newcomers will block on i_mutex */ 4844 ext4_inode_block_unlocked_dio(inode); 4845 inode_dio_wait(inode); --- 861 unchanged lines hidden --- |