On Tue, Feb 18, 2020 at 07:08:49PM -0800, Suraj Jitindar Singh wrote: > The s_group_desc field in the super block info (sbi) is protected by rcu to > prevent access to an invalid pointer during online resize operations. > There are 2 other arrays in sbi, s_group_info and s_flex_groups, which > require similar rcu protection which is introduced in the subsequent > patches. Introduce a helper macro sbi_array_rcu_deref() to be used to > provide rcu protected access to such fields. > > Also update the current s_group_desc access site to use the macro. > > Signed-off-by: Suraj Jitindar Singh <surajjs@xxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx Thanks, applied with the simplification suggested by Balbir. Also note that I generally use stable@xxxxxxxxxx instead of stable@xxxxxxxxxxxxxxx, since that avoids sending excess mail to stable@xxxxxxxxxxxxxxx mailing list. (The stable kernel scripts look for stable@xxxxxxxxxx as well as stable@xxxxxxxxxxxxxxx.) I've made that change in the version of the patch that I applied. - Ted
