extents.c (0790b31b69374ddadefebb156251b319e5b43345) extents.c (847c6c422aa0ae81a5517a9558ec2737806dca48)
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 *

--- 5215 unchanged lines hidden (view full) ---

5224
5225 err = ext4_access_path(handle, inode, path + depth);
5226 if (err)
5227 goto out;
5228
5229 if (ex_start == EXT_FIRST_EXTENT(path[depth].p_hdr))
5230 update = 1;
5231
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 *

--- 5215 unchanged lines hidden (view full) ---

5224
5225 err = ext4_access_path(handle, inode, path + depth);
5226 if (err)
5227 goto out;
5228
5229 if (ex_start == EXT_FIRST_EXTENT(path[depth].p_hdr))
5230 update = 1;
5231
5232 *start = ex_last->ee_block +
5232 *start = le32_to_cpu(ex_last->ee_block) +
5233 ext4_ext_get_actual_len(ex_last);
5234
5235 while (ex_start <= ex_last) {
5233 ext4_ext_get_actual_len(ex_last);
5234
5235 while (ex_start <= ex_last) {
5236 ex_start->ee_block -= shift;
5236 le32_add_cpu(&ex_start->ee_block, -shift);
5237 if (ex_start >
5238 EXT_FIRST_EXTENT(path[depth].p_hdr)) {
5239 if (ext4_ext_try_to_merge_right(inode,
5240 path, ex_start - 1))
5241 ex_last--;
5242 }
5243 ex_start++;
5244 }

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

5250 break;
5251 }
5252
5253 /* Update index too */
5254 err = ext4_access_path(handle, inode, path + depth);
5255 if (err)
5256 goto out;
5257
5237 if (ex_start >
5238 EXT_FIRST_EXTENT(path[depth].p_hdr)) {
5239 if (ext4_ext_try_to_merge_right(inode,
5240 path, ex_start - 1))
5241 ex_last--;
5242 }
5243 ex_start++;
5244 }

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

5250 break;
5251 }
5252
5253 /* Update index too */
5254 err = ext4_access_path(handle, inode, path + depth);
5255 if (err)
5256 goto out;
5257
5258 path[depth].p_idx->ei_block -= shift;
5258 le32_add_cpu(&path[depth].p_idx->ei_block, -shift);
5259 err = ext4_ext_dirty(handle, inode, path + depth);
5260 if (err)
5261 goto out;
5262
5263 /* we are done if current index is not a starting index */
5264 if (path[depth].p_idx != EXT_FIRST_INDEX(path[depth].p_hdr))
5265 break;
5266

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

5295 depth = path->p_depth;
5296 extent = path[depth].p_ext;
5297 if (!extent) {
5298 ext4_ext_drop_refs(path);
5299 kfree(path);
5300 return ret;
5301 }
5302
5259 err = ext4_ext_dirty(handle, inode, path + depth);
5260 if (err)
5261 goto out;
5262
5263 /* we are done if current index is not a starting index */
5264 if (path[depth].p_idx != EXT_FIRST_INDEX(path[depth].p_hdr))
5265 break;
5266

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

5295 depth = path->p_depth;
5296 extent = path[depth].p_ext;
5297 if (!extent) {
5298 ext4_ext_drop_refs(path);
5299 kfree(path);
5300 return ret;
5301 }
5302
5303 stop_block = extent->ee_block + ext4_ext_get_actual_len(extent);
5303 stop_block = le32_to_cpu(extent->ee_block) +
5304 ext4_ext_get_actual_len(extent);
5304 ext4_ext_drop_refs(path);
5305 kfree(path);
5306
5307 /* Nothing to shift, if hole is at the end of file */
5308 if (start >= stop_block)
5309 return ret;
5310
5311 /*
5312 * Don't start shifting extents until we make sure the hole is big
5313 * enough to accomodate the shift.
5314 */
5315 path = ext4_ext_find_extent(inode, start - 1, NULL, 0);
5316 depth = path->p_depth;
5317 extent = path[depth].p_ext;
5305 ext4_ext_drop_refs(path);
5306 kfree(path);
5307
5308 /* Nothing to shift, if hole is at the end of file */
5309 if (start >= stop_block)
5310 return ret;
5311
5312 /*
5313 * Don't start shifting extents until we make sure the hole is big
5314 * enough to accomodate the shift.
5315 */
5316 path = ext4_ext_find_extent(inode, start - 1, NULL, 0);
5317 depth = path->p_depth;
5318 extent = path[depth].p_ext;
5318 ex_start = extent->ee_block;
5319 ex_end = extent->ee_block + ext4_ext_get_actual_len(extent);
5319 ex_start = le32_to_cpu(extent->ee_block);
5320 ex_end = le32_to_cpu(extent->ee_block) +
5321 ext4_ext_get_actual_len(extent);
5320 ext4_ext_drop_refs(path);
5321 kfree(path);
5322
5323 if ((start == ex_start && shift > ex_start) ||
5324 (shift > start - ex_end))
5325 return -EINVAL;
5326
5327 /* Its safe to start updating extents */
5328 while (start < stop_block) {
5329 path = ext4_ext_find_extent(inode, start, NULL, 0);
5330 if (IS_ERR(path))
5331 return PTR_ERR(path);
5332 depth = path->p_depth;
5333 extent = path[depth].p_ext;
5322 ext4_ext_drop_refs(path);
5323 kfree(path);
5324
5325 if ((start == ex_start && shift > ex_start) ||
5326 (shift > start - ex_end))
5327 return -EINVAL;
5328
5329 /* Its safe to start updating extents */
5330 while (start < stop_block) {
5331 path = ext4_ext_find_extent(inode, start, NULL, 0);
5332 if (IS_ERR(path))
5333 return PTR_ERR(path);
5334 depth = path->p_depth;
5335 extent = path[depth].p_ext;
5334 current_block = extent->ee_block;
5336 current_block = le32_to_cpu(extent->ee_block);
5335 if (start > current_block) {
5336 /* Hole, move to the next extent */
5337 ret = mext_next_extent(inode, path, &extent);
5338 if (ret != 0) {
5339 ext4_ext_drop_refs(path);
5340 kfree(path);
5341 if (ret == 1)
5342 ret = 0;

--- 126 unchanged lines hidden --- 		5337 if (start > current_block) {
5338 /* Hole, move to the next extent */
5339 ret = mext_next_extent(inode, path, &extent);
5340 if (ret != 0) {
5341 ext4_ext_drop_refs(path);
5342 kfree(path);
5343 if (ret == 1)
5344 ret = 0;

--- 126 unchanged lines hidden ---