On Fri, Mar 12, 2021 at 10:56:13PM +0900, Daeho Jeong wrote:
> Thanks for suggesting me sysfs_emit().
>
> For atomic values, actually, those are needed for writer part, not reader.
>
> +#define add_compr_block_stat(inode, blocks) \
> + do { \
> + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); \
> + int diff = F2FS_I(inode)->i_cluster_size - blocks; \
> + atomic64_add(blocks, &sbi->compr_written_block); \
> + atomic64_add(diff, &sbi->compr_saved_block); \
> + } while (0)
>
> I needed a protection here, because they might be updated in the race
> condition.
Why? What are you trying to protect from "racing" here?
thanks,
greg k-h
_______________________________________________
Linux-f2fs-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
