korg/e2fsprogs
0
0
Fork 0
mirror of https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git synced 2025-01-10 10:33:32 +08:00
Code Issues Packages Projects Releases Wiki Activity

resize2fs: supply block allocator for extents function

Browse Source 
In the rare case where new blocks are needed while mutating an extent
tree, supply a specialized block allocator so that extent_node_split()
allocates valid blocks for the interior nodes of the extent tree.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2008-08-22 03:07:53 -04:00
parent 86acdebd53
commit 7f9c96ee74
1 changed files with 25 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
resize/resize2fs.c
View File

@ -92,6 +92,7 @@ errcode_t resize_fs(ext2_filsys fs, blk_t *new_size, int flags,
memset(rfs, 0, sizeof(struct ext2_resize_struct));
fix_uninit_block_bitmaps(fs);
fs->priv_data = rfs;
rfs->old_fs = fs;
rfs->flags = flags;
rfs->itable_buf = 0;
@ -987,6 +988,27 @@ static blk_t get_new_block(ext2_resize_t rfs)
}
}
static errcode_t resize2fs_get_alloc_block(ext2_filsys fs, blk64_t goal,
blk64_t *ret)
{
ext2_resize_t rfs = (ext2_resize_t) fs->priv_data;
blk_t blk;
blk = get_new_block(rfs);
if (!blk)
return ENOSPC;
#ifdef RESIZE2FS_DEBUG
if (rfs->flags & 0xF)
printf("get_alloc_block allocating %u\n", blk);
#endif
ext2fs_mark_block_bitmap(rfs->old_fs->block_map, blk);
ext2fs_mark_block_bitmap(rfs->new_fs->block_map, blk);
*ret = (blk64_t) blk;
return 0;
}
static errcode_t block_mover(ext2_resize_t rfs)
{
blk_t blk, old_blk, new_blk;
@ -998,6 +1020,9 @@ static errcode_t block_mover(ext2_resize_t rfs)
ext2_badblocks_list badblock_list = 0;
int bb_modified = 0;
fs->get_alloc_block = resize2fs_get_alloc_block;
old_fs->get_alloc_block = resize2fs_get_alloc_block;
retval = ext2fs_read_bb_inode(old_fs, &badblock_list);
if (retval)
return retval;