add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/overlayfs/copy_up.c
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@@ -475,6 +475,7 @@
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 			/* Restore timestamps on parent (best effort) */
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 			ovl_set_timestamps(upperdir, &c->pstat);
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 			ovl_dentry_set_upper_alias(c->dentry);
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+			ovl_dentry_update_reval(c->dentry, upper);
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 		}
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 	}
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 	inode_unlock(udir);
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@@ -762,6 +763,7 @@
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 		inode_unlock(udir);
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 		ovl_dentry_set_upper_alias(c->dentry);
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+		ovl_dentry_update_reval(c->dentry, ovl_dentry_upper(c->dentry));
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 	}
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 out: