threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/buffer_head.h>
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#include "minix.h"
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enum {DIRECT = 7, DEPTH = 4}; /* Have triple indirect */
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typedef u32 block_t; /* 32 bit, host order */
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static inline unsigned long block_to_cpu(block_t n)
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{
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return n;
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}
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static inline block_t cpu_to_block(unsigned long n)
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{
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return n;
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}
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static inline block_t *i_data(struct inode *inode)
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{
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return (block_t *)minix_i(inode)->u.i2_data;
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}
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#define DIRCOUNT 7
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#define INDIRCOUNT(sb) (1 << ((sb)->s_blocksize_bits - 2))
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static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
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{
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int n = 0;
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struct super_block *sb = inode->i_sb;
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if (block < 0) {
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printk("MINIX-fs: block_to_path: block %ld < 0 on dev %pg\n",
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block, sb->s_bdev);
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} else if ((u64)block * (u64)sb->s_blocksize >=
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minix_sb(sb)->s_max_size) {
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if (printk_ratelimit())
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printk("MINIX-fs: block_to_path: "
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"block %ld too big on dev %pg\n",
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block, sb->s_bdev);
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} else if (block < DIRCOUNT) {
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offsets[n++] = block;
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} else if ((block -= DIRCOUNT) < INDIRCOUNT(sb)) {
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offsets[n++] = DIRCOUNT;
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offsets[n++] = block;
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} else if ((block -= INDIRCOUNT(sb)) < INDIRCOUNT(sb) * INDIRCOUNT(sb)) {
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offsets[n++] = DIRCOUNT + 1;
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offsets[n++] = block / INDIRCOUNT(sb);
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offsets[n++] = block % INDIRCOUNT(sb);
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} else {
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block -= INDIRCOUNT(sb) * INDIRCOUNT(sb);
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offsets[n++] = DIRCOUNT + 2;
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offsets[n++] = (block / INDIRCOUNT(sb)) / INDIRCOUNT(sb);
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offsets[n++] = (block / INDIRCOUNT(sb)) % INDIRCOUNT(sb);
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offsets[n++] = block % INDIRCOUNT(sb);
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}
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return n;
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}
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#include "itree_common.c"
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int V2_minix_get_block(struct inode * inode, long block,
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struct buffer_head *bh_result, int create)
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{
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return get_block(inode, block, bh_result, create);
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}
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void V2_minix_truncate(struct inode * inode)
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{
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truncate(inode);
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}
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unsigned V2_minix_blocks(loff_t size, struct super_block *sb)
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{
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return nblocks(size, sb);
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}
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