This is a note to let you know that I've just added the patch titled exfat: fix inode->i_blocks for non-512 byte sector size device to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: exfat-fix-inode-i_blocks-for-non-512-byte-sector-size-device.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 39c1ce8eafc0ff64fb9e28536ccc7df6a8e2999d Mon Sep 17 00:00:00 2001 From: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx> Date: Wed, 4 Jan 2023 14:37:47 +0800 Subject: exfat: fix inode->i_blocks for non-512 byte sector size device From: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx> commit 39c1ce8eafc0ff64fb9e28536ccc7df6a8e2999d upstream. inode->i_blocks is not real number of blocks, but 512 byte ones. Fixes: 98d917047e8b ("exfat: add file operations") Cc: stable@xxxxxxxxxxxxxxx # v5.7+ Reported-by: Wang Yugui <wangyugui@xxxxxxxxxxxx> Tested-by: Wang Yugui <wangyugui@xxxxxxxxxxxx> Signed-off-by: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx> Reviewed-by: Andy Wu <Andy.Wu@xxxxxxxx> Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/exfat/file.c | 3 +-- fs/exfat/inode.c | 6 ++---- fs/exfat/namei.c | 2 +- fs/exfat/super.c | 3 +-- 4 files changed, 5 insertions(+), 9 deletions(-) --- a/fs/exfat/file.c +++ b/fs/exfat/file.c @@ -250,8 +250,7 @@ void exfat_truncate(struct inode *inode, else mark_inode_dirty(inode); - inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> - inode->i_blkbits; + inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> 9; write_size: aligned_size = i_size_read(inode); if (aligned_size & (blocksize - 1)) { --- a/fs/exfat/inode.c +++ b/fs/exfat/inode.c @@ -242,8 +242,7 @@ static int exfat_map_cluster(struct inod return err; } /* end of if != DIR_DELETED */ - inode->i_blocks += - num_to_be_allocated << sbi->sect_per_clus_bits; + inode->i_blocks += EXFAT_CLU_TO_B(num_to_be_allocated, sbi) >> 9; /* * Move *clu pointer along FAT chains (hole care) because the @@ -600,8 +599,7 @@ static int exfat_fill_inode(struct inode exfat_save_attr(inode, info->attr); - inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> - inode->i_blkbits; + inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> 9; inode->i_mtime = info->mtime; inode->i_ctime = info->mtime; ei->i_crtime = info->crtime; --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -398,7 +398,7 @@ static int exfat_find_empty_entry(struct ei->i_size_ondisk += sbi->cluster_size; ei->i_size_aligned += sbi->cluster_size; ei->flags = p_dir->flags; - inode->i_blocks += 1 << sbi->sect_per_clus_bits; + inode->i_blocks += sbi->cluster_size >> 9; } return dentry; --- a/fs/exfat/super.c +++ b/fs/exfat/super.c @@ -364,8 +364,7 @@ static int exfat_read_root(struct inode inode->i_op = &exfat_dir_inode_operations; inode->i_fop = &exfat_dir_operations; - inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> - inode->i_blkbits; + inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> 9; ei->i_pos = ((loff_t)sbi->root_dir << 32) | 0xffffffff; ei->i_size_aligned = i_size_read(inode); ei->i_size_ondisk = i_size_read(inode); Patches currently in stable-queue which might be from Yuezhang.Mo@xxxxxxxx are queue-5.10/exfat-fix-reporting-fs-error-when-reading-dir-beyond-eof.patch queue-5.10/exfat-fix-inode-i_blocks-for-non-512-byte-sector-size-device.patch queue-5.10/exfat-fix-unexpected-eof-while-reading-dir.patch queue-5.10/exfat-redefine-dir_deleted-as-the-bad-cluster-number.patch