diff options
Diffstat (limited to 'fs/ext4/extents.c')
| -rw-r--r-- | fs/ext4/extents.c | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index ed55ca77e684..e005d9821c0e 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -309,53 +309,6 @@ ext4_force_split_extent_at(handle_t *handle, struct inode *inode, (nofail ? EXT4_GET_BLOCKS_METADATA_NOFAIL:0)); } -/* - * Calculate the number of metadata blocks needed - * to allocate @blocks - * Worse case is one block per extent - */ -int ext4_ext_calc_metadata_amount(struct inode *inode, ext4_lblk_t lblock) -{ - struct ext4_inode_info *ei = EXT4_I(inode); - int idxs; - - idxs = ((inode->i_sb->s_blocksize - sizeof(struct ext4_extent_header)) - / sizeof(struct ext4_extent_idx)); - - /* - * If the new delayed allocation block is contiguous with the - * previous da block, it can share index blocks with the - * previous block, so we only need to allocate a new index - * block every idxs leaf blocks. At ldxs**2 blocks, we need - * an additional index block, and at ldxs**3 blocks, yet - * another index blocks. - */ - if (ei->i_da_metadata_calc_len && - ei->i_da_metadata_calc_last_lblock+1 == lblock) { - int num = 0; - - if ((ei->i_da_metadata_calc_len % idxs) == 0) - num++; - if ((ei->i_da_metadata_calc_len % (idxs*idxs)) == 0) - num++; - if ((ei->i_da_metadata_calc_len % (idxs*idxs*idxs)) == 0) { - num++; - ei->i_da_metadata_calc_len = 0; - } else - ei->i_da_metadata_calc_len++; - ei->i_da_metadata_calc_last_lblock++; - return num; - } - - /* - * In the worst case we need a new set of index blocks at - * every level of the inode's extent tree. - */ - ei->i_da_metadata_calc_len = 1; - ei->i_da_metadata_calc_last_lblock = lblock; - return ext_depth(inode) + 1; -} - static int ext4_ext_max_entries(struct inode *inode, int depth) { |