On 2021/2/9 21:06, Gao Xiang via Linux-erofs wrote:
From: Gao Xiang <[email protected]>Currently, although set_bit() & test_bit() pairs are used as a fast- path for initialized configurations. However, these atomic ops are actually relaxed forms. Instead, load-acquire & store-release form is needed to make sure uninitialized fields won't be observed in advance here (yet no such corresponding bitops so use full barriers instead.) Fixes: 62dc45979f3f ("staging: erofs: fix race of initializing xattrs of a inode at the same time") Fixes: 152a333a5895 ("staging: erofs: add compacted compression indexes support") Cc: <[email protected]> # 5.3+ Reported-by: Huang Jianan <[email protected]> Signed-off-by: Gao Xiang <[email protected]>
Thanks for detailed explanation for barrier offline. Reviewed-by: Chao Yu <[email protected]> Thanks,
