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https://github.com/linux-msm/laptops-kernel.git
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Linus Torvalds
bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* QNX6 file system, Linux implementation.
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*
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* Version : 1.0.0
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*
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* History :
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*
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* 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.
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*
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*/
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#include <linux/buffer_head.h>
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#include <linux/slab.h>
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#include <linux/crc32.h>
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#include "qnx6.h"
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static void qnx6_mmi_copy_sb(struct qnx6_super_block *qsb,
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struct qnx6_mmi_super_block *sb)
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{
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qsb->sb_magic = sb->sb_magic;
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qsb->sb_checksum = sb->sb_checksum;
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qsb->sb_serial = sb->sb_serial;
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qsb->sb_blocksize = sb->sb_blocksize;
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qsb->sb_num_inodes = sb->sb_num_inodes;
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qsb->sb_free_inodes = sb->sb_free_inodes;
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qsb->sb_num_blocks = sb->sb_num_blocks;
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qsb->sb_free_blocks = sb->sb_free_blocks;
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/* the rest of the superblock is the same */
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memcpy(&qsb->Inode, &sb->Inode, sizeof(sb->Inode));
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memcpy(&qsb->Bitmap, &sb->Bitmap, sizeof(sb->Bitmap));
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memcpy(&qsb->Longfile, &sb->Longfile, sizeof(sb->Longfile));
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}
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struct qnx6_super_block *qnx6_mmi_fill_super(struct super_block *s, int silent)
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{
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struct buffer_head *bh1, *bh2 = NULL;
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struct qnx6_mmi_super_block *sb1, *sb2;
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struct qnx6_super_block *qsb = NULL;
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struct qnx6_sb_info *sbi;
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__u64 offset;
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/* Check the superblock signatures
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start with the first superblock */
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bh1 = sb_bread(s, 0);
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if (!bh1) {
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pr_err("Unable to read first mmi superblock\n");
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return NULL;
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}
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sb1 = (struct qnx6_mmi_super_block *)bh1->b_data;
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sbi = QNX6_SB(s);
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if (fs32_to_cpu(sbi, sb1->sb_magic) != QNX6_SUPER_MAGIC) {
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if (!silent) {
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pr_err("wrong signature (magic) in superblock #1.\n");
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goto out;
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}
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}
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/* checksum check - start at byte 8 and end at byte 512 */
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if (fs32_to_cpu(sbi, sb1->sb_checksum) !=
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crc32_be(0, (char *)(bh1->b_data + 8), 504)) {
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pr_err("superblock #1 checksum error\n");
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goto out;
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}
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/* calculate second superblock blocknumber */
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offset = fs32_to_cpu(sbi, sb1->sb_num_blocks) + QNX6_SUPERBLOCK_AREA /
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fs32_to_cpu(sbi, sb1->sb_blocksize);
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/* set new blocksize */
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if (!sb_set_blocksize(s, fs32_to_cpu(sbi, sb1->sb_blocksize))) {
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pr_err("unable to set blocksize\n");
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goto out;
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}
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/* blocksize invalidates bh - pull it back in */
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brelse(bh1);
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bh1 = sb_bread(s, 0);
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if (!bh1)
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goto out;
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sb1 = (struct qnx6_mmi_super_block *)bh1->b_data;
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/* read second superblock */
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bh2 = sb_bread(s, offset);
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if (!bh2) {
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pr_err("unable to read the second superblock\n");
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goto out;
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}
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sb2 = (struct qnx6_mmi_super_block *)bh2->b_data;
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if (fs32_to_cpu(sbi, sb2->sb_magic) != QNX6_SUPER_MAGIC) {
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if (!silent)
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pr_err("wrong signature (magic) in superblock #2.\n");
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goto out;
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}
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/* checksum check - start at byte 8 and end at byte 512 */
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if (fs32_to_cpu(sbi, sb2->sb_checksum)
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!= crc32_be(0, (char *)(bh2->b_data + 8), 504)) {
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pr_err("superblock #1 checksum error\n");
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goto out;
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}
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qsb = kmalloc_obj(*qsb);
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if (!qsb) {
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pr_err("unable to allocate memory.\n");
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goto out;
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}
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if (fs64_to_cpu(sbi, sb1->sb_serial) >
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fs64_to_cpu(sbi, sb2->sb_serial)) {
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/* superblock #1 active */
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qnx6_mmi_copy_sb(qsb, sb1);
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#ifdef CONFIG_QNX6FS_DEBUG
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qnx6_superblock_debug(qsb, s);
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#endif
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memcpy(bh1->b_data, qsb, sizeof(struct qnx6_super_block));
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sbi->sb_buf = bh1;
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sbi->sb = (struct qnx6_super_block *)bh1->b_data;
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brelse(bh2);
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pr_info("superblock #1 active\n");
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} else {
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/* superblock #2 active */
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qnx6_mmi_copy_sb(qsb, sb2);
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#ifdef CONFIG_QNX6FS_DEBUG
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qnx6_superblock_debug(qsb, s);
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#endif
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memcpy(bh2->b_data, qsb, sizeof(struct qnx6_super_block));
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sbi->sb_buf = bh2;
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sbi->sb = (struct qnx6_super_block *)bh2->b_data;
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brelse(bh1);
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pr_info("superblock #2 active\n");
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}
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kfree(qsb);
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/* offset for mmi_fs is just SUPERBLOCK_AREA bytes */
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sbi->s_blks_off = QNX6_SUPERBLOCK_AREA / s->s_blocksize;
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/* success */
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return sbi->sb;
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out:
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if (bh1 != NULL)
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brelse(bh1);
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if (bh2 != NULL)
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brelse(bh2);
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return NULL;
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}
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