extents.c (d895cb1af15c04c522a25c79cc429076987c089b) extents.c (357b66fdc8ad4cea6e6336956a70742f961f0a4d)
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 *

--- 2929 unchanged lines hidden (view full) ---

2938
2939 depth = ext_depth(inode);
2940 ex = path[depth].p_ext;
2941 ee_block = le32_to_cpu(ex->ee_block);
2942 ee_len = ext4_ext_get_actual_len(ex);
2943 newblock = split - ee_block + ext4_ext_pblock(ex);
2944
2945 BUG_ON(split < ee_block || split >= (ee_block + ee_len));
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 *

--- 2929 unchanged lines hidden (view full) ---

2938
2939 depth = ext_depth(inode);
2940 ex = path[depth].p_ext;
2941 ee_block = le32_to_cpu(ex->ee_block);
2942 ee_len = ext4_ext_get_actual_len(ex);
2943 newblock = split - ee_block + ext4_ext_pblock(ex);
2944
2945 BUG_ON(split < ee_block || split >= (ee_block + ee_len));
2946 BUG_ON(!ext4_ext_is_uninitialized(ex) &&
2947 split_flag & (EXT4_EXT_MAY_ZEROOUT |
2948 EXT4_EXT_MARK_UNINIT1 |
2949 EXT4_EXT_MARK_UNINIT2));
2946
2947 err = ext4_ext_get_access(handle, inode, path + depth);
2948 if (err)
2949 goto out;
2950
2951 if (split == ee_block) {
2952 /*
2953 * case b: block @split is the block that the extent begins with

--- 102 unchanged lines hidden (view full) ---

3056 EXT4_EXT_MARK_UNINIT2;
3057 if (split_flag & EXT4_EXT_DATA_VALID2)
3058 split_flag1 |= EXT4_EXT_DATA_VALID1;
3059 err = ext4_split_extent_at(handle, inode, path,
3060 map->m_lblk + map->m_len, split_flag1, flags1);
3061 if (err)
3062 goto out;
3063 }
2950
2951 err = ext4_ext_get_access(handle, inode, path + depth);
2952 if (err)
2953 goto out;
2954
2955 if (split == ee_block) {
2956 /*
2957 * case b: block @split is the block that the extent begins with

--- 102 unchanged lines hidden (view full) ---

3060 EXT4_EXT_MARK_UNINIT2;
3061 if (split_flag & EXT4_EXT_DATA_VALID2)
3062 split_flag1 |= EXT4_EXT_DATA_VALID1;
3063 err = ext4_split_extent_at(handle, inode, path,
3064 map->m_lblk + map->m_len, split_flag1, flags1);
3065 if (err)
3066 goto out;
3067 }
3064
3068 /*
3069 * Update path is required because previous ext4_split_extent_at() may
3070 * result in split of original leaf or extent zeroout.
3071 */
3065 ext4_ext_drop_refs(path);
3066 path = ext4_ext_find_extent(inode, map->m_lblk, path);
3067 if (IS_ERR(path))
3068 return PTR_ERR(path);
3072 ext4_ext_drop_refs(path);
3073 path = ext4_ext_find_extent(inode, map->m_lblk, path);
3074 if (IS_ERR(path))
3075 return PTR_ERR(path);
3076 depth = ext_depth(inode);
3077 ex = path[depth].p_ext;
3078 uninitialized = ext4_ext_is_uninitialized(ex);
3079 split_flag1 = 0;
3069
3070 if (map->m_lblk >= ee_block) {
3080
3081 if (map->m_lblk >= ee_block) {
3071 split_flag1 = split_flag & (EXT4_EXT_MAY_ZEROOUT |
3072 EXT4_EXT_DATA_VALID2);
3073 if (uninitialized)
3082 split_flag1 = split_flag & EXT4_EXT_DATA_VALID2;
3083 if (uninitialized) {
3074 split_flag1 |= EXT4_EXT_MARK_UNINIT1;
3084 split_flag1 |= EXT4_EXT_MARK_UNINIT1;
3075 if (split_flag & EXT4_EXT_MARK_UNINIT2)
3076 split_flag1 |= EXT4_EXT_MARK_UNINIT2;
3085 split_flag1 |= split_flag & (EXT4_EXT_MAY_ZEROOUT |
3086 EXT4_EXT_MARK_UNINIT2);
3087 }
3077 err = ext4_split_extent_at(handle, inode, path,
3078 map->m_lblk, split_flag1, flags);
3079 if (err)
3080 goto out;
3081 }
3082
3083 ext4_ext_show_leaf(inode, path);
3084out:

--- 1219 unchanged lines hidden (view full) ---

4304 * preallocate space for a file. This implements ext4's fallocate file
4305 * operation, which gets called from sys_fallocate system call.
4306 * For block-mapped files, posix_fallocate should fall back to the method
4307 * of writing zeroes to the required new blocks (the same behavior which is
4308 * expected for file systems which do not support fallocate() system call).
4309 */
4310long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
4311{
3088 err = ext4_split_extent_at(handle, inode, path,
3089 map->m_lblk, split_flag1, flags);
3090 if (err)
3091 goto out;
3092 }
3093
3094 ext4_ext_show_leaf(inode, path);
3095out:

--- 1219 unchanged lines hidden (view full) ---

4315 * preallocate space for a file. This implements ext4's fallocate file
4316 * operation, which gets called from sys_fallocate system call.
4317 * For block-mapped files, posix_fallocate should fall back to the method
4318 * of writing zeroes to the required new blocks (the same behavior which is
4319 * expected for file systems which do not support fallocate() system call).
4320 */
4321long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
4322{
4312 struct inode *inode = file_inode(file);
4323 struct inode *inode = file->f_path.dentry->d_inode;
4313 handle_t *handle;
4314 loff_t new_size;
4315 unsigned int max_blocks;
4316 int ret = 0;
4317 int ret2 = 0;
4318 int retries = 0;
4319 int flags;
4320 struct ext4_map_blocks map;

--- 245 unchanged lines hidden (view full) ---

4566 * @inode: The inode of the file to punch a hole in
4567 * @offset: The starting byte offset of the hole
4568 * @length: The length of the hole
4569 *
4570 * Returns the number of blocks removed or negative on err
4571 */
4572int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length)
4573{
4324 handle_t *handle;
4325 loff_t new_size;
4326 unsigned int max_blocks;
4327 int ret = 0;
4328 int ret2 = 0;
4329 int retries = 0;
4330 int flags;
4331 struct ext4_map_blocks map;

--- 245 unchanged lines hidden (view full) ---

4577 * @inode: The inode of the file to punch a hole in
4578 * @offset: The starting byte offset of the hole
4579 * @length: The length of the hole
4580 *
4581 * Returns the number of blocks removed or negative on err
4582 */
4583int ext4_ext_punch_hole(struct file *file, loff_t offset, loff_t length)
4584{
4574 struct inode *inode = file_inode(file);
4585 struct inode *inode = file->f_path.dentry->d_inode;
4575 struct super_block *sb = inode->i_sb;
4576 ext4_lblk_t first_block, stop_block;
4577 struct address_space *mapping = inode->i_mapping;
4578 handle_t *handle;
4579 loff_t first_page, last_page, page_len;
4580 loff_t first_page_offset, last_page_offset;
4581 int credits, err = 0;
4582

--- 203 unchanged lines hidden --- 		4586 struct super_block *sb = inode->i_sb;
4587 ext4_lblk_t first_block, stop_block;
4588 struct address_space *mapping = inode->i_mapping;
4589 handle_t *handle;
4590 loff_t first_page, last_page, page_len;
4591 loff_t first_page_offset, last_page_offset;
4592 int credits, err = 0;
4593

--- 203 unchanged lines hidden ---