^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/fs/hpfs/buffer.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * general buffer i/o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "hpfs_fn.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) secno hpfs_search_hotfix_map(struct super_block *s, secno sec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) unsigned i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct hpfs_sb_info *sbi = hpfs_sb(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) for (i = 0; unlikely(i < sbi->n_hotfixes); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) if (sbi->hotfix_from[i] == sec) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) return sbi->hotfix_to[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) return sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) unsigned hpfs_search_hotfix_map_for_range(struct super_block *s, secno sec, unsigned n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) unsigned i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct hpfs_sb_info *sbi = hpfs_sb(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) for (i = 0; unlikely(i < sbi->n_hotfixes); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) if (sbi->hotfix_from[i] >= sec && sbi->hotfix_from[i] < sec + n) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) n = sbi->hotfix_from[i] - sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) void hpfs_prefetch_sectors(struct super_block *s, unsigned secno, int n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct blk_plug plug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if (n <= 0 || unlikely(secno >= hpfs_sb(s)->sb_fs_size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (unlikely(hpfs_search_hotfix_map_for_range(s, secno, n) != n))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) bh = sb_find_get_block(s, secno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (bh) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (buffer_uptodate(bh)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) brelse(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) blk_start_plug(&plug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) while (n > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (unlikely(secno >= hpfs_sb(s)->sb_fs_size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) sb_breadahead(s, secno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) secno++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) n--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) blk_finish_plug(&plug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* Map a sector into a buffer and return pointers to it and to the buffer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head **bhp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int ahead)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) hpfs_lock_assert(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) hpfs_prefetch_sectors(s, secno, ahead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) cond_resched();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) *bhp = bh = sb_bread(s, hpfs_search_hotfix_map(s, secno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (bh != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) pr_err("%s(): read error\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /* Like hpfs_map_sector but don't read anything */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head **bhp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct buffer_head *bh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /*return hpfs_map_sector(s, secno, bhp, 0);*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) hpfs_lock_assert(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) cond_resched();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if ((*bhp = bh = sb_getblk(s, hpfs_search_hotfix_map(s, secno))) != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (!buffer_uptodate(bh)) wait_on_buffer(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) set_buffer_uptodate(bh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return bh->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) pr_err("%s(): getblk failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /* Map 4 sectors into a 4buffer and return pointers to it and to the buffer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffer_head *qbh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) int ahead)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) char *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) hpfs_lock_assert(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) cond_resched();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (secno & 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) pr_err("%s(): unaligned read\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) hpfs_prefetch_sectors(s, secno, 4 + ahead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (!hpfs_map_sector(s, secno + 0, &qbh->bh[0], 0)) goto bail0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (!hpfs_map_sector(s, secno + 1, &qbh->bh[1], 0)) goto bail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (!hpfs_map_sector(s, secno + 2, &qbh->bh[2], 0)) goto bail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (!hpfs_map_sector(s, secno + 3, &qbh->bh[3], 0)) goto bail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (likely(qbh->bh[1]->b_data == qbh->bh[0]->b_data + 1 * 512) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) likely(qbh->bh[2]->b_data == qbh->bh[0]->b_data + 2 * 512) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) likely(qbh->bh[3]->b_data == qbh->bh[0]->b_data + 3 * 512)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return qbh->data = qbh->bh[0]->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) qbh->data = data = kmalloc(2048, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) pr_err("%s(): out of memory\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) goto bail4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) memcpy(data + 0 * 512, qbh->bh[0]->b_data, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) memcpy(data + 1 * 512, qbh->bh[1]->b_data, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) memcpy(data + 2 * 512, qbh->bh[2]->b_data, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) memcpy(data + 3 * 512, qbh->bh[3]->b_data, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) bail4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) brelse(qbh->bh[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) bail3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) brelse(qbh->bh[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) bail2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) brelse(qbh->bh[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) bail1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) brelse(qbh->bh[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) bail0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) /* Don't read sectors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) void *hpfs_get_4sectors(struct super_block *s, unsigned secno,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct quad_buffer_head *qbh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) cond_resched();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) hpfs_lock_assert(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (secno & 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) pr_err("%s(): unaligned read\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (!hpfs_get_sector(s, secno + 0, &qbh->bh[0])) goto bail0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (!hpfs_get_sector(s, secno + 1, &qbh->bh[1])) goto bail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (!hpfs_get_sector(s, secno + 2, &qbh->bh[2])) goto bail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (!hpfs_get_sector(s, secno + 3, &qbh->bh[3])) goto bail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (likely(qbh->bh[1]->b_data == qbh->bh[0]->b_data + 1 * 512) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) likely(qbh->bh[2]->b_data == qbh->bh[0]->b_data + 2 * 512) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) likely(qbh->bh[3]->b_data == qbh->bh[0]->b_data + 3 * 512)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return qbh->data = qbh->bh[0]->b_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (!(qbh->data = kmalloc(2048, GFP_NOFS))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) pr_err("%s(): out of memory\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) goto bail4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return qbh->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) bail4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) brelse(qbh->bh[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) bail3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) brelse(qbh->bh[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) bail2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) brelse(qbh->bh[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) bail1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) brelse(qbh->bh[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) bail0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) void hpfs_brelse4(struct quad_buffer_head *qbh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (unlikely(qbh->data != qbh->bh[0]->b_data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) kfree(qbh->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) brelse(qbh->bh[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) brelse(qbh->bh[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) brelse(qbh->bh[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) brelse(qbh->bh[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) void hpfs_mark_4buffers_dirty(struct quad_buffer_head *qbh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (unlikely(qbh->data != qbh->bh[0]->b_data)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) memcpy(qbh->bh[0]->b_data, qbh->data + 0 * 512, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) memcpy(qbh->bh[1]->b_data, qbh->data + 1 * 512, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) memcpy(qbh->bh[2]->b_data, qbh->data + 2 * 512, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) memcpy(qbh->bh[3]->b_data, qbh->data + 3 * 512, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) mark_buffer_dirty(qbh->bh[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) mark_buffer_dirty(qbh->bh[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) mark_buffer_dirty(qbh->bh[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) mark_buffer_dirty(qbh->bh[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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