LU-16268 mdd: set effective changelog mask correctly

[fs/lustre-release.git] / lustre / mdd / mdd_lproc.c

diff --git a/lustre/mdd/mdd_lproc.c b/lustre/mdd/mdd_lproc.c
index 49216ec..703c72c 100644 (file)
--- a/lustre/mdd/mdd_lproc.c
+++ b/lustre/mdd/mdd_lproc.c
@@ -155,11 +155,11 @@ mdd_changelog_mask_seq_write(struct file *file, const char __user *buffer,
 
        mdd->mdd_cl.mc_proc_mask = newmask;
 
-       /* if mask keeps all bits from oldmask then just extend the current
-        * mask, otherwise the current mask should be recalculated through
-        * all user masks.
+       /* if oldmask is not MINMASK and newmask keeps all bits from oldmask
+        * then just extend the current mask, otherwise the current mask
+        * should be recalculated through all user masks.
         */
-       if ((newmask & oldmask) == oldmask) {
+       if (oldmask != CHANGELOG_MINMASK && (newmask & oldmask) == oldmask) {
                spin_lock(&mdd->mdd_cl.mc_user_lock);
                mdd->mdd_cl.mc_current_mask |= newmask;
                spin_unlock(&mdd->mdd_cl.mc_user_lock);