fs/ext4/indirect.c

44  *	ext4_block_to_path - parse the block number into array of offsets
47  *	@offsets: array to store the offsets in
55  *	return value is the path length and @offsets[n] is the offset of
76 			      ext4_lblk_t offsets[4], int *boundary)
87 		offsets[n++] = i_block;
90 		offsets[n++] = EXT4_IND_BLOCK;
91 		offsets[n++] = i_block;
94 		offsets[n++] = EXT4_DIND_BLOCK;
95 		offsets[n++] = i_block >> ptrs_bits;
96 		offsets[n++] = i_block & (ptrs - 1);
99 		offsets[n++] = EXT4_TIND_BLOCK;
100 		offsets[n++] = i_block >> (ptrs_bits * 2);
101 		offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1);
102 		offsets[n++] = i_block & (ptrs - 1);
118  *	@offsets: offsets of pointers in inode/indirect blocks
145 				 ext4_lblk_t  *offsets,
156 	add_chain(chain, NULL, EXT4_I(inode)->i_data + *offsets);
184 		add_chain(++p, bh, (__le32 *)bh->b_data + *++offsets);
308  * @offsets: offsets (in the blocks) to store the pointers to next.
330 			     int indirect_blks, ext4_lblk_t *offsets,
372 		p = branch[i].p = (__le32 *) bh->b_data + offsets[i];
536 	ext4_lblk_t offsets[4];
548 	depth = ext4_block_to_path(inode, map->m_lblk, offsets,
554 	partial = ext4_get_branch(inode, depth, offsets, chain, &err);
587 			count = count * epb + (epb - offsets[i] - 1);
636 				offsets + (partial - chain), partial);
773  *	@offsets: offsets of pointers in that branch (see ext4_block_to_path)
805 				  ext4_lblk_t offsets[4], Indirect chain[4],
813 	for (k = depth; k > 1 && !offsets[k-1]; k--)
815 	partial = ext4_get_branch(inode, k, offsets, chain, &err);
1124 	ext4_lblk_t offsets[4];
1138 		n = ext4_block_to_path(inode, last_block, offsets, NULL);
1161 		ext4_free_data(handle, inode, NULL, i_data+offsets[0],
1166 	partial = ext4_find_shared(inode, n, offsets, chain, &nr);
1197 	switch (offsets[0]) {
1240 	ext4_lblk_t offsets[4], offsets2[4];
1256 	n = ext4_block_to_path(inode, start, offsets, NULL);
1263 		ext4_free_data(handle, inode, NULL, i_data + offsets[0],
1279 			ext4_free_data(handle, inode, NULL, i_data + offsets[0],
1285 		partial = p = ext4_find_shared(inode, n, offsets, chain, &nr);
1350 	partial = p = ext4_find_shared(inode, n, offsets, chain, &nr);
1360 			if (offsets[i] != offsets2[i]) {
1449 	switch (offsets[0]) {