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exfat: directly call filemap_write_and_wait_range() on < 5.19 kernel

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sync_blockdev_range will be added to linux 5.19 kernel. So, do directly
call filemap_write_and_wait_range() instead of sync_blockdev_range() on
lower kernel version than 5.19 kernel.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Namjae Jeon 2022-05-19 22:40:35 +09:00
commit 2a594d44a0
1 changed files with 5 additions and 47 deletions
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58
fatent.c
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@ -273,7 +273,6 @@ int exfat_find_last_cluster(struct super_block *sb, struct exfat_chain *p_chain,
return 0;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 19, 0)
int exfat_zeroed_cluster(struct inode *dir, unsigned int clu)
{
struct super_block *sb = dir->i_sb;
@ -306,61 +305,20 @@ int exfat_zeroed_cluster(struct inode *dir, unsigned int clu)
}
if (IS_DIRSYNC(dir))
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 19, 0)
return sync_blockdev_range(sb->s_bdev,
EXFAT_BLK_TO_B(blknr, sb),
EXFAT_BLK_TO_B(last_blknr, sb) - 1);
return 0;
}
#else
int exfat_zeroed_cluster(struct inode *dir, unsigned int clu)
{
struct super_block *sb = dir->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct buffer_head *bhs[MAX_BUF_PER_PAGE];
int nr_bhs = MAX_BUF_PER_PAGE;
sector_t blknr, last_blknr;
int err, i, n;
blknr = exfat_cluster_to_sector(sbi, clu);
last_blknr = blknr + sbi->sect_per_clus;
if (last_blknr > sbi->num_sectors && sbi->num_sectors > 0) {
exfat_fs_error_ratelimit(sb,
"%s: out of range(sect:%llu len:%u)",
__func__, (unsigned long long)blknr,
sbi->sect_per_clus);
return -EIO;
}
/* Zeroing the unused blocks on this cluster */
while (blknr < last_blknr) {
for (n = 0; n < nr_bhs && blknr < last_blknr; n++, blknr++) {
bhs[n] = sb_getblk(sb, blknr);
if (!bhs[n]) {
err = -ENOMEM;
goto release_bhs;
}
memset(bhs[n]->b_data, 0, sb->s_blocksize);
}
err = exfat_update_bhs(bhs, n, IS_DIRSYNC(dir));
if (err)
goto release_bhs;
for (i = 0; i < n; i++)
brelse(bhs[i]);
}
return 0;
release_bhs:
exfat_err(sb, "failed zeroed sect %llu\n", (unsigned long long)blknr);
for (i = 0; i < n; i++)
bforget(bhs[i]);
return err;
}
return filemap_write_and_wait_range(sb->s_bdev->bd_inode->i_mapping,
EXFAT_BLK_TO_B(blknr, sb),
EXFAT_BLK_TO_B(last_blknr, sb) - 1);
#endif
return 0;
}
int exfat_alloc_cluster(struct inode *inode, unsigned int num_alloc,
struct exfat_chain *p_chain, bool sync_bmap)
{